Oh no..... ;( looks like the VFD display on my 9100A has dies and the worst of it is that it's my own bloody stupid fault....the front of my 9100A was pretty loose because of others before me opening it not so carefully and the plastic "clips" probably becoming a bit more brittle over the years. I had put away the unit on about 1 meter high and somehow the front part got completely loose and dropped on the floor......the ribbon cable came loose in the process. I think it is correct that one corner pin is clipped off from this connector ? it is on both sides as far as I can see. Removed the VFD PCB but can't see any visible problem. I assume I should see some glow at the "bulb" end of the VFD ? So....if anyone has a working VFD display for me please let me know. André Verstuurd vanaf mijn iPad _______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com https://pairlist7.pair.net/mailman/listinfo/techtoolslist FTP site is: ftp://ttl.arcadetech.org/TTL/Test_Equipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/
I ended up buying another 9110FT as nobody had a spare VFD display, I have the board, but no VFD Glass, but it’s a LOT of pins to remove a VFD, maybe you just damaged IC or broke a part off PCB? William Stillwell Hamster / KI4SWY Stillwell Software Solutions. Free Play Florida Arcade & Pinball Show Organizer -----Original Message----- From: Techtoolslist [mailto:techtoolslist-bounces@flippers.com] On Behalf Of Andre Huijts Sent: Monday, August 17, 2015 1:51 AM To: Technical Tools Mail List <techtoolslist@flippers.com> Subject: [Techtoolslist] Looking for a 9100A VFD display Oh no..... ;( looks like the VFD display on my 9100A has dies and the worst of it is that it's my own bloody stupid fault....the front of my 9100A was pretty loose because of others before me opening it not so carefully and the plastic "clips" probably becoming a bit more brittle over the years. I had put away the unit on about 1 meter high and somehow the front part got completely loose and dropped on the floor......the ribbon cable came loose in the process. I think it is correct that one corner pin is clipped off from this connector ? it is on both sides as far as I can see. Removed the VFD PCB but can't see any visible problem. I assume I should see some glow at the "bulb" end of the VFD ? So....if anyone has a working VFD display for me please let me know. André Verstuurd vanaf mijn iPad _______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com https://pairlist7.pair.net/mailman/listinfo/techtoolslist FTP site is: ftp://ttl.arcadetech.org/TTL/Test_Equipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/ _______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com https://pairlist7.pair.net/mailman/listinfo/techtoolslist FTP site is: ftp://ttl.arcadetech.org/TTL/Test_Equipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/
It is likely time for someone to make an LCD/LED replacement... I did find spare NOS displays on eBay years ago, might still be available there (not at the moment though). Noritake Itron DM256X26GB (21B) So, it is 256 X 26 DMD Noritake-Itron does still supply all sorts of displays - perhaps one of their old distributors may have one lying around? John :-#)# On 08/17/2015 11:53 AM, William Stillwell wrote:
I ended up buying another 9110FT as nobody had a spare VFD display, I have the board, but no VFD Glass, but it’s a LOT of pins to remove a VFD, maybe you just damaged IC or broke a part off PCB?
William Stillwell Hamster / KI4SWY Stillwell Software Solutions. Free Play Florida Arcade & Pinball Show Organizer
-----Original Message----- From: Techtoolslist [mailto:techtoolslist-bounces@flippers.com] On Behalf Of Andre Huijts Sent: Monday, August 17, 2015 1:51 AM To: Technical Tools Mail List <techtoolslist@flippers.com> Subject: [Techtoolslist] Looking for a 9100A VFD display
Oh no..... ;( looks like the VFD display on my 9100A has dies and the worst of it is that it's my own bloody stupid fault....the front of my 9100A was pretty loose because of others before me opening it not so carefully and the plastic "clips" probably becoming a bit more brittle over the years. I had put away the unit on about 1 meter high and somehow the front part got completely loose and dropped on the floor......the ribbon cable came loose in the process.
I think it is correct that one corner pin is clipped off from this connector ? it is on both sides as far as I can see.
Removed the VFD PCB but can't see any visible problem. I assume I should see some glow at the "bulb" end of the VFD ?
So....if anyone has a working VFD display for me please let me know.
André
Verstuurd vanaf mijn iPad _______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com https://pairlist7.pair.net/mailman/listinfo/techtoolslist FTP site is: ftp://ttl.arcadetech.org/TTL/Test_Equipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/
_______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com https://pairlist7.pair.net/mailman/listinfo/techtoolslist FTP site is: ftp://ttl.arcadetech.org/TTL/Test_Equipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/
-- How to subscribe or unsubscribe from TTL http://seven.pairlist.net/mailman/listinfo/techtoolslist _______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com https://pairlist7.pair.net/mailman/listinfo/techtoolslist FTP site is: ftp://ttl.arcadetech.org/TTL/Test_Equipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/
Thanks for the replies guys ! Yes it would be awesome if a replacement could be made. From what I’ve read the characters are sent by the main unit in ASCII format (well at least part of the character set) at 19.2 kbd in TTL RS-232 format. I think there are plenty of LCD displays with serial interfaces but finding one with the right size might be tricky. It would be great if we had the technical datasheet of the DM256X26GB as it shows which characters it “understands”. I found displays of the same brand with serial interface and some more lines on the display, but I wouldn’t be bothered by that. Alternatively, it would be a nice arduino project I guess. It could do some translation to a TFT full color display….the only problem is fitting one in the unit…..or loose the “Softkeys” direct relation with a remote display. I’m still a bit amazed that Fluke didn’t make an option to use the monitor output instead of the internal display for regular test work. Anyway….the thing that bothers me is that I cannot SEE a phyical damage on the VFD. If there would be a crack it would be sure enough it was dead. So I did some measuring and found that the 70V that is required for the display is missing…. Now I have to find out how this voltage is generated….pretty sure it’s not coming directly from the power supply as it’s a weird voltage… Diving into the docs now… There may be some hope…. Cheers, André
Op 17 aug. 2015, om 21:24 heeft John Robertson <jrr@flippers.com> het volgende geschreven:
It is likely time for someone to make an LCD/LED replacement...
I did find spare NOS displays on eBay years ago, might still be available there (not at the moment though). Noritake Itron DM256X26GB (21B)
So, it is 256 X 26 DMD
Noritake-Itron does still supply all sorts of displays - perhaps one of their old distributors may have one lying around?
John :-#)#
On 08/17/2015 11:53 AM, William Stillwell wrote:
I ended up buying another 9110FT as nobody had a spare VFD display, I have the board, but no VFD Glass, but it’s a LOT of pins to remove a VFD, maybe you just damaged IC or broke a part off PCB?
William Stillwell Hamster / KI4SWY Stillwell Software Solutions. Free Play Florida Arcade & Pinball Show Organizer
-----Original Message----- From: Techtoolslist [mailto:techtoolslist-bounces@flippers.com] On Behalf Of Andre Huijts Sent: Monday, August 17, 2015 1:51 AM To: Technical Tools Mail List <techtoolslist@flippers.com> Subject: [Techtoolslist] Looking for a 9100A VFD display
Oh no..... ;( looks like the VFD display on my 9100A has dies and the worst of it is that it's my own bloody stupid fault....the front of my 9100A was pretty loose because of others before me opening it not so carefully and the plastic "clips" probably becoming a bit more brittle over the years. I had put away the unit on about 1 meter high and somehow the front part got completely loose and dropped on the floor......the ribbon cable came loose in the process.
I think it is correct that one corner pin is clipped off from this connector ? it is on both sides as far as I can see.
Removed the VFD PCB but can't see any visible problem. I assume I should see some glow at the "bulb" end of the VFD ?
So....if anyone has a working VFD display for me please let me know.
André
Verstuurd vanaf mijn iPad _______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com https://pairlist7.pair.net/mailman/listinfo/techtoolslist FTP site is: ftp://ttl.arcadetech.org/TTL/Test_Equipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/
_______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com https://pairlist7.pair.net/mailman/listinfo/techtoolslist FTP site is: ftp://ttl.arcadetech.org/TTL/Test_Equipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/
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_______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com https://pairlist7.pair.net/mailman/listinfo/techtoolslist FTP site is: ftp://ttl.arcadetech.org/TTL/Test_Equipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/
André Huijts andre.huijts@upcmail.nl
Hi Andre, The DM256X26GB tube is just a Dot Matrix Display (DMD) tube - it can display anything within the restrictions of 256 column by 26 row variable intensity matrix. It is the video interface board that you need to decode. John :-#)# On 08/17/2015 1:54 PM, Andre Huijts wrote:
Thanks for the replies guys !
Yes it would be awesome if a replacement could be made. From what I’ve read the characters are sent by the main unit in ASCII format (well at least part of the character set) at 19.2 kbd in TTL RS-232 format.
I think there are plenty of LCD displays with serial interfaces but finding one with the right size might be tricky.
It would be great if we had the technical datasheet of the DM256X26GB as it shows which characters it “understands”.
I found displays of the same brand with serial interface and some more lines on the display, but I wouldn’t be bothered by that.
Alternatively, it would be a nice arduino project I guess. It could do some translation to a TFT full color display….the only problem is fitting one in the unit…..or loose the “Softkeys” direct relation with a remote display.
I’m still a bit amazed that Fluke didn’t make an option to use the monitor output instead of the internal display for regular test work.
Anyway….the thing that bothers me is that I cannot SEE a phyical damage on the VFD. If there would be a crack it would be sure enough it was dead.
So I did some measuring and found that the 70V that is required for the display is missing….
Now I have to find out how this voltage is generated….pretty sure it’s not coming directly from the power supply as it’s a weird voltage…
Diving into the docs now…
There may be some hope….
Cheers, André
Op 17 aug. 2015, om 21:24 heeft John Robertson <jrr@flippers.com> het volgende geschreven:
It is likely time for someone to make an LCD/LED replacement...
I did find spare NOS displays on eBay years ago, might still be available there (not at the moment though). Noritake Itron DM256X26GB (21B)
So, it is 256 X 26 DMD
Noritake-Itron does still supply all sorts of displays - perhaps one of their old distributors may have one lying around?
John :-#)#
On 08/17/2015 11:53 AM, William Stillwell wrote:
I ended up buying another 9110FT as nobody had a spare VFD display, I have the board, but no VFD Glass, but it’s a LOT of pins to remove a VFD, maybe you just damaged IC or broke a part off PCB?
William Stillwell Hamster / KI4SWY Stillwell Software Solutions. Free Play Florida Arcade & Pinball Show Organizer
-----Original Message----- From: Techtoolslist [mailto:techtoolslist-bounces@flippers.com] On Behalf Of Andre Huijts Sent: Monday, August 17, 2015 1:51 AM To: Technical Tools Mail List <techtoolslist@flippers.com> Subject: [Techtoolslist] Looking for a 9100A VFD display
Oh no..... ;( looks like the VFD display on my 9100A has dies and the worst of it is that it's my own bloody stupid fault....the front of my 9100A was pretty loose because of others before me opening it not so carefully and the plastic "clips" probably becoming a bit more brittle over the years. I had put away the unit on about 1 meter high and somehow the front part got completely loose and dropped on the floor......the ribbon cable came loose in the process.
I think it is correct that one corner pin is clipped off from this connector ? it is on both sides as far as I can see.
Removed the VFD PCB but can't see any visible problem. I assume I should see some glow at the "bulb" end of the VFD ?
So....if anyone has a working VFD display for me please let me know.
André
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Hi John, Yes I am aware it’s a DMD but the vast bulk of info displayed by the 9100A is simply text or inverse text. From what I’ve read in the manuals it says something else. It says the main unit puts out the characters in codes as per a table which is also in the manual. I looked up the code for the capital A and it’s 41 hex and 65 decimal, and I remember that that is the ASCII code for A from my (Atari) BASIC programming days… Anyway, these codes are sent by the main board to U1 (the Z8 on the display board). The Z8 translates this into the pattern that is needed to be displayed. Of course the display can also do some graphics (although…..where does the 9100A do that ?) but the table says it sends a certain code and then the next 6 bytes contain the graphics. Stuff like that would be needed to decoded and translated if we’d use another display device. Maybe some of the newer serial VFD displays actually understand these commands….that’s why I’d like to compare the current manuals of those with the old one. Anyway, as a first step, you could hook up the serial pins of the display connector to a computer with a terminal program to see what data is “spit out” by the main board. Not sure if a MAX-232 is needed to get stuff to real RS-232 level…or maybe some optical separation for safety ? I couldn’t find the interface nor the 70V generation section (not even the fuse) on the manuals…..anyone have a tip where they are ? Cheers, André
Op 17 aug. 2015, om 23:37 heeft John Robertson <jrr@flippers.com> het volgende geschreven:
Hi Andre,
The DM256X26GB tube is just a Dot Matrix Display (DMD) tube - it can display anything within the restrictions of 256 column by 26 row variable intensity matrix. It is the video interface board that you need to decode.
John :-#)#
On 08/17/2015 1:54 PM, Andre Huijts wrote:
Thanks for the replies guys !
Yes it would be awesome if a replacement could be made. From what I’ve read the characters are sent by the main unit in ASCII format (well at least part of the character set) at 19.2 kbd in TTL RS-232 format.
I think there are plenty of LCD displays with serial interfaces but finding one with the right size might be tricky.
It would be great if we had the technical datasheet of the DM256X26GB as it shows which characters it “understands”.
I found displays of the same brand with serial interface and some more lines on the display, but I wouldn’t be bothered by that.
Alternatively, it would be a nice arduino project I guess. It could do some translation to a TFT full color display….the only problem is fitting one in the unit…..or loose the “Softkeys” direct relation with a remote display.
I’m still a bit amazed that Fluke didn’t make an option to use the monitor output instead of the internal display for regular test work.
Anyway….the thing that bothers me is that I cannot SEE a phyical damage on the VFD. If there would be a crack it would be sure enough it was dead.
So I did some measuring and found that the 70V that is required for the display is missing….
Now I have to find out how this voltage is generated….pretty sure it’s not coming directly from the power supply as it’s a weird voltage…
Diving into the docs now…
There may be some hope….
Cheers, André
Op 17 aug. 2015, om 21:24 heeft John Robertson <jrr@flippers.com> het volgende geschreven:
It is likely time for someone to make an LCD/LED replacement...
I did find spare NOS displays on eBay years ago, might still be available there (not at the moment though). Noritake Itron DM256X26GB (21B)
So, it is 256 X 26 DMD
Noritake-Itron does still supply all sorts of displays - perhaps one of their old distributors may have one lying around?
John :-#)#
On 08/17/2015 11:53 AM, William Stillwell wrote:
I ended up buying another 9110FT as nobody had a spare VFD display, I have the board, but no VFD Glass, but it’s a LOT of pins to remove a VFD, maybe you just damaged IC or broke a part off PCB?
William Stillwell Hamster / KI4SWY Stillwell Software Solutions. Free Play Florida Arcade & Pinball Show Organizer
-----Original Message----- From: Techtoolslist [mailto:techtoolslist-bounces@flippers.com] On Behalf Of Andre Huijts Sent: Monday, August 17, 2015 1:51 AM To: Technical Tools Mail List <techtoolslist@flippers.com> Subject: [Techtoolslist] Looking for a 9100A VFD display
Oh no..... ;( looks like the VFD display on my 9100A has dies and the worst of it is that it's my own bloody stupid fault....the front of my 9100A was pretty loose because of others before me opening it not so carefully and the plastic "clips" probably becoming a bit more brittle over the years. I had put away the unit on about 1 meter high and somehow the front part got completely loose and dropped on the floor......the ribbon cable came loose in the process.
I think it is correct that one corner pin is clipped off from this connector ? it is on both sides as far as I can see.
Removed the VFD PCB but can't see any visible problem. I assume I should see some glow at the "bulb" end of the VFD ?
So....if anyone has a working VFD display for me please let me know.
André
-- How to subscribe or unsubscribe from TTL http://seven.pairlist.net/mailman/listinfo/techtoolslist
_______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com https://pairlist7.pair.net/mailman/listinfo/techtoolslist FTP site is: ftp://ttl.arcadetech.org/TTL/Test_Equipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/
André Huijts andre.huijts@upcmail.nl
Oh.....yeah understand what you mean now John, I wrote something about what characters the DM256X26GB could display, but indeed this old display is a "dumb" device unlike the modern displays that have built in serial (or others) decoding....essentially with a modern version you wouldn't need the display functions of the Z8 anymore. Verstuurd vanaf mijn iPad
Op 17 aug. 2015 om 23:37 heeft John Robertson <jrr@flippers.com> het volgende geschreven:
Hi Andre,
The DM256X26GB tube is just a Dot Matrix Display (DMD) tube - it can display anything within the restrictions of 256 column by 26 row variable intensity matrix. It is the video interface board that you need to decode.
John :-#)#
On 08/17/2015 1:54 PM, Andre Huijts wrote: Thanks for the replies guys !
Yes it would be awesome if a replacement could be made. From what I’ve read the characters are sent by the main unit in ASCII format (well at least part of the character set) at 19.2 kbd in TTL RS-232 format.
I think there are plenty of LCD displays with serial interfaces but finding one with the right size might be tricky.
It would be great if we had the technical datasheet of the DM256X26GB as it shows which characters it “understands”.
I found displays of the same brand with serial interface and some more lines on the display, but I wouldn’t be bothered by that.
Alternatively, it would be a nice arduino project I guess. It could do some translation to a TFT full color display….the only problem is fitting one in the unit…..or loose the “Softkeys” direct relation with a remote display.
I’m still a bit amazed that Fluke didn’t make an option to use the monitor output instead of the internal display for regular test work.
Anyway….the thing that bothers me is that I cannot SEE a phyical damage on the VFD. If there would be a crack it would be sure enough it was dead.
So I did some measuring and found that the 70V that is required for the display is missing….
Now I have to find out how this voltage is generated….pretty sure it’s not coming directly from the power supply as it’s a weird voltage…
Diving into the docs now…
There may be some hope….
Cheers, André
Op 17 aug. 2015, om 21:24 heeft John Robertson <jrr@flippers.com> het volgende geschreven:
It is likely time for someone to make an LCD/LED replacement...
I did find spare NOS displays on eBay years ago, might still be available there (not at the moment though). Noritake Itron DM256X26GB (21B)
So, it is 256 X 26 DMD
Noritake-Itron does still supply all sorts of displays - perhaps one of their old distributors may have one lying around?
John :-#)#
On 08/17/2015 11:53 AM, William Stillwell wrote: I ended up buying another 9110FT as nobody had a spare VFD display, I have the board, but no VFD Glass, but it’s a LOT of pins to remove a VFD, maybe you just damaged IC or broke a part off PCB?
William Stillwell Hamster / KI4SWY Stillwell Software Solutions. Free Play Florida Arcade & Pinball Show Organizer
-----Original Message----- From: Techtoolslist [mailto:techtoolslist-bounces@flippers.com] On Behalf Of Andre Huijts Sent: Monday, August 17, 2015 1:51 AM To: Technical Tools Mail List <techtoolslist@flippers.com> Subject: [Techtoolslist] Looking for a 9100A VFD display
Oh no..... ;( looks like the VFD display on my 9100A has dies and the worst of it is that it's my own bloody stupid fault....the front of my 9100A was pretty loose because of others before me opening it not so carefully and the plastic "clips" probably becoming a bit more brittle over the years. I had put away the unit on about 1 meter high and somehow the front part got completely loose and dropped on the floor......the ribbon cable came loose in the process.
I think it is correct that one corner pin is clipped off from this connector ? it is on both sides as far as I can see.
Removed the VFD PCB but can't see any visible problem. I assume I should see some glow at the "bulb" end of the VFD ?
So....if anyone has a working VFD display for me please let me know.
André
-- How to subscribe or unsubscribe from TTL http://seven.pairlist.net/mailman/listinfo/techtoolslist
_______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com https://pairlist7.pair.net/mailman/listinfo/techtoolslist FTP site is: ftp://ttl.arcadetech.org/TTL/Test_Equipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/
Here's just an example of a modern VFD: http://www.farnell.com/datasheets/14282.pdf It requires only 5V power supply, has built in RS-232 interface (looks like you can directly connect the Fluke, the levels it understands as high and low for RS-232 can handle TTL levels. It also shows the characters it can display in the table...ASCII plus more. Not saying it's 100% compatible but it should do the texts, wonder about inverse characters though. It's also a lot smaller but this is just an example. By the way, I included a picture of the display in the mail but it was probably too big: http://www.dragonslairfans.com/smfor/index.php?action=dlattach;topic=6456.0;... Verstuurd vanaf mijn iPad
Op 18 aug. 2015 om 00:55 heeft Andre Huijts <a.huijts@upcmail.nl> het volgende geschreven:
Oh.....yeah understand what you mean now John, I wrote something about what characters the DM256X26GB could display, but indeed this old display is a "dumb" device unlike the modern displays that have built in serial (or others) decoding....essentially with a modern version you wouldn't need the display functions of the Z8 anymore.
Verstuurd vanaf mijn iPad
Op 17 aug. 2015 om 23:37 heeft John Robertson <jrr@flippers.com> het volgende geschreven:
Hi Andre,
The DM256X26GB tube is just a Dot Matrix Display (DMD) tube - it can display anything within the restrictions of 256 column by 26 row variable intensity matrix. It is the video interface board that you need to decode.
John :-#)#
On 08/17/2015 1:54 PM, Andre Huijts wrote: Thanks for the replies guys !
Yes it would be awesome if a replacement could be made. From what I’ve read the characters are sent by the main unit in ASCII format (well at least part of the character set) at 19.2 kbd in TTL RS-232 format.
I think there are plenty of LCD displays with serial interfaces but finding one with the right size might be tricky.
It would be great if we had the technical datasheet of the DM256X26GB as it shows which characters it “understands”.
I found displays of the same brand with serial interface and some more lines on the display, but I wouldn’t be bothered by that.
Alternatively, it would be a nice arduino project I guess. It could do some translation to a TFT full color display….the only problem is fitting one in the unit…..or loose the “Softkeys” direct relation with a remote display.
I’m still a bit amazed that Fluke didn’t make an option to use the monitor output instead of the internal display for regular test work.
Anyway….the thing that bothers me is that I cannot SEE a phyical damage on the VFD. If there would be a crack it would be sure enough it was dead.
So I did some measuring and found that the 70V that is required for the display is missing….
Now I have to find out how this voltage is generated….pretty sure it’s not coming directly from the power supply as it’s a weird voltage…
Diving into the docs now…
There may be some hope….
Techtoolslist mailing list Techtoolslist@flippers.com https://pairlist7.pair.net/mailman/listinfo/techtoolslist FTP site is: ftp://ttl.arcadetech.org/TTL/Test_Equipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/
50 Richardson, TX 75081 USA Phone: 1-972-234-4343 Toll-Free: 1-800-941-0322 Fax: 1-972-234-4295 Tony Thank you for the opportunity and best regards, Emily Lalonde Your Solutions Partner LN Part Number Model Number Make Avail Condition Qty Price Ext 1 VTC15295711 MN256X32FB NORITAKE Usually ships within 1 week New 1 $250.00 $250.00 DOT GRAPHIC GLASS -----Original Message----- From: Techtoolslist [mailto:techtoolslist-bounces@flippers.com] On Behalf Of Andre Huijts Sent: Monday, August 17, 2015 7:13 PM To: Technical Tools Mail List Subject: Re: [Techtoolslist] Looking for a 9100A VFD display Here's just an example of a modern VFD: http://www.farnell.com/datasheets/14282.pdf It requires only 5V power supply, has built in RS-232 interface (looks like you can directly connect the Fluke, the levels it understands as high and low for RS-232 can handle TTL levels. It also shows the characters it can display in the table...ASCII plus more. Not saying it's 100% compatible but it should do the texts, wonder about inverse characters though. It's also a lot smaller but this is just an example. By the way, I included a picture of the display in the mail but it was probably too big: http://www.dragonslairfans.com/smfor/index.php?action=dlattach;topic=6456.0;... Verstuurd vanaf mijn iPad
Op 18 aug. 2015 om 00:55 heeft Andre Huijts <a.huijts@upcmail.nl> het volgende geschreven:
Oh.....yeah understand what you mean now John, I wrote something about what characters the DM256X26GB could display, but indeed this old display is a "dumb" device unlike the modern displays that have built in serial (or others) decoding....essentially with a modern version you wouldn't need the display functions of the Z8 anymore.
Verstuurd vanaf mijn iPad
Op 17 aug. 2015 om 23:37 heeft John Robertson <jrr@flippers.com> het volgende geschreven:
Hi Andre,
The DM256X26GB tube is just a Dot Matrix Display (DMD) tube - it can display anything within the restrictions of 256 column by 26 row variable intensity matrix. It is the video interface board that you need to decode.
John :-#)#
On 08/17/2015 1:54 PM, Andre Huijts wrote: Thanks for the replies guys !
Yes it would be awesome if a replacement could be made. From what I’ve read the characters are sent by the main unit in ASCII format (well at least part of the character set) at 19.2 kbd in TTL RS-232 format.
I think there are plenty of LCD displays with serial interfaces but finding one with the right size might be tricky.
It would be great if we had the technical datasheet of the DM256X26GB as it shows which characters it “understands”.
I found displays of the same brand with serial interface and some more lines on the display, but I wouldn’t be bothered by that.
Alternatively, it would be a nice arduino project I guess. It could do some translation to a TFT full color display….the only problem is fitting one in the unit…..or loose the “Softkeys” direct relation with a remote display.
I’m still a bit amazed that Fluke didn’t make an option to use the monitor output instead of the internal display for regular test work.
Anyway….the thing that bothers me is that I cannot SEE a phyical damage on the VFD. If there would be a crack it would be sure enough it was dead.
So I did some measuring and found that the 70V that is required for the display is missing….
Now I have to find out how this voltage is generated….pretty sure it’s not coming directly from the power supply as it’s a weird voltage…
Diving into the docs now…
There may be some hope….
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1 VTC15295711 MN256X32FB NORITAKE Usually ships within 1 week New 1 $250.00 $250.00 DOT GRAPHIC GLASS -----Original Message----- From: Techtoolslist [mailto:techtoolslist-bounces@flippers.com] On Behalf Of Andre Huijts Sent: Monday, August 17, 2015 7:13 PM To: Technical Tools Mail List Subject: Re: [Techtoolslist] Looking for a 9100A VFD display Here's just an example of a modern VFD: http://www.farnell.com/datasheets/14282.pdf It requires only 5V power supply, has built in RS-232 interface (looks like you can directly connect the Fluke, the levels it understands as high and low for RS-232 can handle TTL levels. It also shows the characters it can display in the table...ASCII plus more. Not saying it's 100% compatible but it should do the texts, wonder about inverse characters though. It's also a lot smaller but this is just an example. By the way, I included a picture of the display in the mail but it was probably too big: http://www.dragonslairfans.com/smfor/index.php?action=dlattach;topic=6456.0;... Verstuurd vanaf mijn iPad
Op 18 aug. 2015 om 00:55 heeft Andre Huijts <a.huijts@upcmail.nl> het volgende geschreven:
Oh.....yeah understand what you mean now John, I wrote something about what characters the DM256X26GB could display, but indeed this old display is a "dumb" device unlike the modern displays that have built in serial (or others) decoding....essentially with a modern version you wouldn't need the display functions of the Z8 anymore.
Verstuurd vanaf mijn iPad
Op 17 aug. 2015 om 23:37 heeft John Robertson <jrr@flippers.com> het volgende geschreven:
Hi Andre,
The DM256X26GB tube is just a Dot Matrix Display (DMD) tube - it can display anything within the restrictions of 256 column by 26 row variable intensity matrix. It is the video interface board that you need to decode.
John :-#)#
On 08/17/2015 1:54 PM, Andre Huijts wrote: Thanks for the replies guys !
Yes it would be awesome if a replacement could be made. From what I’ve read the characters are sent by the main unit in ASCII format (well at least part of the character set) at 19.2 kbd in TTL RS-232 format.
I think there are plenty of LCD displays with serial interfaces but finding one with the right size might be tricky.
It would be great if we had the technical datasheet of the DM256X26GB as it shows which characters it “understands”.
I found displays of the same brand with serial interface and some more lines on the display, but I wouldn’t be bothered by that.
Alternatively, it would be a nice arduino project I guess. It could do some translation to a TFT full color display….the only problem is fitting one in the unit…..or loose the “Softkeys” direct relation with a remote display.
I’m still a bit amazed that Fluke didn’t make an option to use the monitor output instead of the internal display for regular test work.
Anyway….the thing that bothers me is that I cannot SEE a phyical damage on the VFD. If there would be a crack it would be sure enough it was dead.
So I did some measuring and found that the 70V that is required for the display is missing….
Now I have to find out how this voltage is generated….pretty sure it’s not coming directly from the power supply as it’s a weird voltage…
Diving into the docs now…
There may be some hope….
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OK guys………to say that this made me happy is an understatement…… 70V fuse (125mA) was blown !!!! Baffled why but who cares…. Replaced it and I was immediately greeted with the beautiful look of VFD glow :) PFFFFEEEEEEWWWWW…… !!!! Now…..I seriously need to repair the plastic front…..if anyone has a completely dead front unit they don’t need anymore…… :D Cheers, André
Op 17 aug. 2015, om 21:24 heeft John Robertson <jrr@flippers.com> het volgende geschreven:
It is likely time for someone to make an LCD/LED replacement...
I did find spare NOS displays on eBay years ago, might still be available there (not at the moment though). Noritake Itron DM256X26GB (21B)
So, it is 256 X 26 DMD
Noritake-Itron does still supply all sorts of displays - perhaps one of their old distributors may have one lying around?
John :-#)#
On 08/17/2015 11:53 AM, William Stillwell wrote:
I ended up buying another 9110FT as nobody had a spare VFD display, I have the board, but no VFD Glass, but it’s a LOT of pins to remove a VFD, maybe you just damaged IC or broke a part off PCB?
William Stillwell Hamster / KI4SWY Stillwell Software Solutions. Free Play Florida Arcade & Pinball Show Organizer
-----Original Message----- From: Techtoolslist [mailto:techtoolslist-bounces@flippers.com] On Behalf Of Andre Huijts Sent: Monday, August 17, 2015 1:51 AM To: Technical Tools Mail List <techtoolslist@flippers.com> Subject: [Techtoolslist] Looking for a 9100A VFD display
Oh no..... ;( looks like the VFD display on my 9100A has dies and the worst of it is that it's my own bloody stupid fault....the front of my 9100A was pretty loose because of others before me opening it not so carefully and the plastic "clips" probably becoming a bit more brittle over the years. I had put away the unit on about 1 meter high and somehow the front part got completely loose and dropped on the floor......the ribbon cable came loose in the process.
I think it is correct that one corner pin is clipped off from this connector ? it is on both sides as far as I can see.
Removed the VFD PCB but can't see any visible problem. I assume I should see some glow at the "bulb" end of the VFD ?
So....if anyone has a working VFD display for me please let me know.
André
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André Huijts andre.huijts@upcmail.nl _______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com https://pairlist7.pair.net/mailman/listinfo/techtoolslist FTP site is: ftp://ttl.arcadetech.org/TTL/Test_Equipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/
participants (4)
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Andre Huijts -
John Robertson -
tonyhtbsusa -
William Stillwell