Hi folks Got some old 1980's Taito boards to fix and surprise! All 2716 are blank! This happened with about 5 boards and more than 40 ICs most of them are 2716 but some 2732 too. Do you guys is experiencing something like this? Thanks! JL _______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com https://pairlist7.pair.net/mailman/listinfo/techtoolslist FTP site is: ftp://ftp.flippers.com/TTL/Test_Equipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/
On Sat, 22 Oct 2022 22:56:22 -0300 Jose Luiz Martins <joseluizmartins@gmail.com> wrote:
Hi folks
Got some old 1980's Taito boards to fix and surprise! All 2716 are blank! This happened with about 5 boards and more than 40 ICs most of them are 2716 but some 2732 too.
Do you guys is experiencing something like this?
I have 2732s, 2532s, 2716s, and 2708s here that are working fine. _______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com https://pairlist7.pair.net/mailman/listinfo/techtoolslist FTP site is: ftp://ftp.flippers.com/TTL/Test_Equipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/
What temp were the boards stored at? Best Regards, Bill
On Oct 22, 2022, at 10:10 PM, David Gersic <info@zaccaria-pinball.com> wrote:
On Sat, 22 Oct 2022 22:56:22 -0300 Jose Luiz Martins <joseluizmartins@gmail.com> wrote:
Hi folks
Got some old 1980's Taito boards to fix and surprise! All 2716 are blank! This happened with about 5 boards and more than 40 ICs most of them are 2716 but some 2732 too.
Do you guys is experiencing something like this?
I have 2732s, 2532s, 2716s, and 2708s here that are working fine.
_______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com https://pairlist7.pair.net/mailman/listinfo/techtoolslist FTP site is: ftp://ftp.flippers.com/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://ftp.flippers.com/TTL/Test_Equipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/
I live in São Paulo - Brazil, the whether here is very similar to Miami FL, not too cold and not too hot (considering the rest of the country), I'd say something between 50F and 100F degrees. Thanks Em dom., 23 de out. de 2022 05:16, Bill Karkula <wkarkula@comcast.net> escreveu:
What temp were the boards stored at?
Best Regards,
Bill
On Oct 22, 2022, at 10:10 PM, David Gersic <info@zaccaria-pinball.com> wrote:
On Sat, 22 Oct 2022 22:56:22 -0300 Jose Luiz Martins <joseluizmartins@gmail.com> wrote:
Hi folks
Got some old 1980's Taito boards to fix and surprise! All 2716 are blank! This happened with about 5 boards and more than 40 ICs most of them are 2716 but some 2732 too.
Do you guys is experiencing something like this?
I have 2732s, 2532s, 2716s, and 2708s here that are working fine.
_______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com https://pairlist7.pair.net/mailman/listinfo/techtoolslist FTP site is: ftp://ftp.flippers.com/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://ftp.flippers.com/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://ftp.flippers.com/TTL/Test_Equipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/
I'm more surprised more Nintendo games haven't had this problem. All it takes is a lack of window covers and an old-fashioned flash camera. On Sat, Oct 22, 2022, 8:56 PM Jose Luiz Martins <joseluizmartins@gmail.com> wrote:
Hi folks
Got some old 1980's Taito boards to fix and surprise! All 2716 are blank! This happened with about 5 boards and more than 40 ICs most of them are 2716 but some 2732 too.
Do you guys is experiencing something like this?
Thanks!
JL _______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com https://pairlist7.pair.net/mailman/listinfo/techtoolslist FTP site is: ftp://ftp.flippers.com/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://ftp.flippers.com/TTL/Test_Equipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/
I have worked on hundreds and hundreds of Taito space invader pcbs over 25 years and never seen any fully blank EPROMs. Are you sure your programmer is of sufficient current to read them properly? Some usb programmers will work with a narrow selection of 2716’s and claim compatibility with others - but they’re really not up to it. I use a Data I/O 29b programmer, I only use a modern usb programmer for 27128 and bigger as you cannot guarantee results for devices smaller than this, usb programmers lack the current and I have seen too many people discard 2716’s determining them ‘bad’ because their usb programmer has trouble with them. I put them in the data I/o and they work fine. I’ve done a bunch of tests of this with my own TL866II+. Andrew Welburn (mobile)
On Oct 24, 2022, at 8:41 PM, Rodger Boots <rlboots2@gmail.com> wrote:
I'm more surprised more Nintendo games haven't had this problem. All it takes is a lack of window covers and an old-fashioned flash camera.
On Sat, Oct 22, 2022, 8:56 PM Jose Luiz Martins <joseluizmartins@gmail.com> wrote:
Hi folks
Got some old 1980's Taito boards to fix and surprise! All 2716 are blank! This happened with about 5 boards and more than 40 ICs most of them are 2716 but some 2732 too.
Do you guys is experiencing something like this?
Thanks!
JL _______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com https://pairlist7.pair.net/mailman/listinfo/techtoolslist FTP site is: ftp://ftp.flippers.com/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://ftp.flippers.com/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://ftp.flippers.com/TTL/Test_Equipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/
On 2022/10/24 8:41 p.m., Rodger Boots wrote:
I'm more surprised more Nintendo games haven't had this problem. All it takes is a lack of window covers and an old-fashioned flash camera.
That's interesting - if a strobe tube (like used in a camera flash can actually erase the older EPROMs...I'll have to test that out today. I have these pistols and rifles that use focused strobe tubes to illuminate CDS cells on their targets for a large scale shooting gallery I own on a local midway (Pacific National Exhibition - Vancouver, BC). So it is an easy thing to fire up - so to speak! John :-#)#
On Sat, Oct 22, 2022, 8:56 PM Jose Luiz Martins <joseluizmartins@gmail.com> wrote:
Hi folks
Got some old 1980's Taito boards to fix and surprise! All 2716 are blank! This happened with about 5 boards and more than 40 ICs most of them are 2716 but some 2732 too.
Do you guys is experiencing something like this?
Thanks!
JL
I have photographed games running on my bench with the flash on and exposed windows plenty of times. Older games can freak out and crash/reset but there’s never any long term damage. Nintendo weren’t stupid, uncovered windows are not a great issue unless you have the exact wavelength of light for the needed exposure period at the right strength. The reality is in common use you are unlikely to encounter that set of variables lining up to cause damage. Andrew Welburn (mobile)
On Oct 25, 2022, at 9:53 AM, John Robertson via Techtoolslist <techtoolslist@flippers.com> wrote:
On 2022/10/24 8:41 p.m., Rodger Boots wrote:
I'm more surprised more Nintendo games haven't had this problem. All it takes is a lack of window covers and an old-fashioned flash camera.
That's interesting - if a strobe tube (like used in a camera flash can actually erase the older EPROMs...I'll have to test that out today. I have these pistols and rifles that use focused strobe tubes to illuminate CDS cells on their targets for a large scale shooting gallery I own on a local midway (Pacific National Exhibition - Vancouver, BC). So it is an easy thing to fire up - so to speak!
John :-#)#
On Sat, Oct 22, 2022, 8:56 PM Jose Luiz Martins <joseluizmartins@gmail.com> wrote:
Hi folks
Got some old 1980's Taito boards to fix and surprise! All 2716 are blank! This happened with about 5 boards and more than 40 ICs most of them are 2716 but some 2732 too.
Do you guys is experiencing something like this?
Thanks!
JL
_______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com https://pairlist7.pair.net/mailman/listinfo/techtoolslist FTP site is: ftp://ftp.flippers.com/TTL/Test_Equipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/
Same here. Xenon flash tubes don't produce much energy at the ~250nm wavelength required for EPROM erasure; their emission spectrum typically falls off at about 350-400nm. They'll crash if photographed while running, sure, but that's due to all of those transistors' junctions acting like photodiodes for a few milliseconds. But no erasure will occur. -Dave On 10/25/22 15:01, Andrew Welburn wrote:
I have photographed games running on my bench with the flash on and exposed windows plenty of times. Older games can freak out and crash/reset but there’s never any long term damage. Nintendo weren’t stupid, uncovered windows are not a great issue unless you have the exact wavelength of light for the needed exposure period at the right strength. The reality is in common use you are unlikely to encounter that set of variables lining up to cause damage.
Andrew Welburn (mobile)
On Oct 25, 2022, at 9:53 AM, John Robertson via Techtoolslist <techtoolslist@flippers.com> wrote:
On 2022/10/24 8:41 p.m., Rodger Boots wrote:
I'm more surprised more Nintendo games haven't had this problem. All it takes is a lack of window covers and an old-fashioned flash camera.
That's interesting - if a strobe tube (like used in a camera flash can actually erase the older EPROMs...I'll have to test that out today. I have these pistols and rifles that use focused strobe tubes to illuminate CDS cells on their targets for a large scale shooting gallery I own on a local midway (Pacific National Exhibition - Vancouver, BC). So it is an easy thing to fire up - so to speak!
John :-#)#
On Sat, Oct 22, 2022, 8:56 PM Jose Luiz Martins <joseluizmartins@gmail.com> wrote:
Hi folks
Got some old 1980's Taito boards to fix and surprise! All 2716 are blank! This happened with about 5 boards and more than 40 ICs most of them are 2716 but some 2732 too.
Do you guys is experiencing something like this?
Thanks!
JL
_______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com https://pairlist7.pair.net/mailman/listinfo/techtoolslist FTP site is: ftp://ftp.flippers.com/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://ftp.flippers.com/TTL/Test_Equipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/
-- Dave McGuire McGuire Scientific Services, LLC New Kensington, PA _______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com https://pairlist7.pair.net/mailman/listinfo/techtoolslist FTP site is: ftp://ftp.flippers.com/TTL/Test_Equipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/
My job, at the time, was with Rockwell Collins Radio which was showing off their WXR700 weather radar (used by Boeing in their large jet planes. The company photographer took the promo photos then the unit was set up for the demonstration. It was dead as a doornail. All 10 2716 EPROMS were erased. They reloaded the software and everything ended up working. We didn't have them, but there were manufactures of EPROM erasers that used flashtubes that they claimed could erase a batch in about 5 seconds. They may have been special flashtubes, I don't know for sure. On Tue, Oct 25, 2022 at 2:06 PM Dave McGuire < mcguire@mcguirescientificservices.com> wrote:
Same here. Xenon flash tubes don't produce much energy at the ~250nm wavelength required for EPROM erasure; their emission spectrum typically falls off at about 350-400nm.
They'll crash if photographed while running, sure, but that's due to all of those transistors' junctions acting like photodiodes for a few milliseconds. But no erasure will occur.
-Dave
On 10/25/22 15:01, Andrew Welburn wrote:
I have photographed games running on my bench with the flash on and exposed windows plenty of times. Older games can freak out and crash/reset but there’s never any long term damage. Nintendo weren’t stupid, uncovered windows are not a great issue unless you have the exact wavelength of light for the needed exposure period at the right strength. The reality is in common use you are unlikely to encounter that set of variables lining up to cause damage.
Andrew Welburn (mobile)
On Oct 25, 2022, at 9:53 AM, John Robertson via Techtoolslist < techtoolslist@flippers.com> wrote:
On 2022/10/24 8:41 p.m., Rodger Boots wrote:
I'm more surprised more Nintendo games haven't had this problem. All it takes is a lack of window covers and an old-fashioned flash camera.
That's interesting - if a strobe tube (like used in a camera flash can actually erase the older EPROMs...I'll have to test that out today. I have these pistols and rifles that use focused strobe tubes to illuminate CDS cells on their targets for a large scale shooting gallery I own on a local midway (Pacific National Exhibition - Vancouver, BC). So it is an easy thing to fire up - so to speak!
John :-#)#
On Sat, Oct 22, 2022, 8:56 PM Jose Luiz Martins <
joseluizmartins@gmail.com>
wrote:
Hi folks
Got some old 1980's Taito boards to fix and surprise! All 2716 are blank! This happened with about 5 boards and more than 40 ICs most of them are 2716 but some 2732 too.
Do you guys is experiencing something like this?
Thanks!
JL
_______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com https://pairlist7.pair.net/mailman/listinfo/techtoolslist FTP site is: ftp://ftp.flippers.com/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://ftp.flippers.com/TTL/Test_Equipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/
-- Dave McGuire McGuire Scientific Services, LLC New Kensington, PA
_______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com https://pairlist7.pair.net/mailman/listinfo/techtoolslist FTP site is: ftp://ftp.flippers.com/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://ftp.flippers.com/TTL/Test_Equipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/
I'd bet they were special flashtubes, and I'd further bet that there was something else going on with those 2716s. That much UV would've also rendered any people nearby at least partially blind, and that'd never have made it out into the consumer camera world. -Dave On 10/25/22 18:48, Rodger Boots wrote:
My job, at the time, was with Rockwell Collins Radio which was showing off their WXR700 weather radar (used by Boeing in their large jet planes. The company photographer took the promo photos then the unit was set up for the demonstration. It was dead as a doornail. All 10 2716 EPROMS were erased. They reloaded the software and everything ended up working.
We didn't have them, but there were manufactures of EPROM erasers that used flashtubes that they claimed could erase a batch in about 5 seconds. They may have been special flashtubes, I don't know for sure.
On Tue, Oct 25, 2022 at 2:06 PM Dave McGuire < mcguire@mcguirescientificservices.com> wrote:
Same here. Xenon flash tubes don't produce much energy at the ~250nm wavelength required for EPROM erasure; their emission spectrum typically falls off at about 350-400nm.
They'll crash if photographed while running, sure, but that's due to all of those transistors' junctions acting like photodiodes for a few milliseconds. But no erasure will occur.
-Dave
On 10/25/22 15:01, Andrew Welburn wrote:
I have photographed games running on my bench with the flash on and exposed windows plenty of times. Older games can freak out and crash/reset but there’s never any long term damage. Nintendo weren’t stupid, uncovered windows are not a great issue unless you have the exact wavelength of light for the needed exposure period at the right strength. The reality is in common use you are unlikely to encounter that set of variables lining up to cause damage.
Andrew Welburn (mobile)
On Oct 25, 2022, at 9:53 AM, John Robertson via Techtoolslist < techtoolslist@flippers.com> wrote:
On 2022/10/24 8:41 p.m., Rodger Boots wrote:
I'm more surprised more Nintendo games haven't had this problem. All it takes is a lack of window covers and an old-fashioned flash camera.
That's interesting - if a strobe tube (like used in a camera flash can actually erase the older EPROMs...I'll have to test that out today. I have these pistols and rifles that use focused strobe tubes to illuminate CDS cells on their targets for a large scale shooting gallery I own on a local midway (Pacific National Exhibition - Vancouver, BC). So it is an easy thing to fire up - so to speak!
John :-#)#
On Sat, Oct 22, 2022, 8:56 PM Jose Luiz Martins <
joseluizmartins@gmail.com>
wrote:
Hi folks
Got some old 1980's Taito boards to fix and surprise! All 2716 are blank! This happened with about 5 boards and more than 40 ICs most of them are 2716 but some 2732 too.
Do you guys is experiencing something like this?
Thanks!
JL
_______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com https://pairlist7.pair.net/mailman/listinfo/techtoolslist FTP site is: ftp://ftp.flippers.com/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://ftp.flippers.com/TTL/Test_Equipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/
-- Dave McGuire McGuire Scientific Services, LLC New Kensington, PA
_______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com https://pairlist7.pair.net/mailman/listinfo/techtoolslist FTP site is: ftp://ftp.flippers.com/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://ftp.flippers.com/TTL/Test_Equipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/
-- Dave McGuire McGuire Scientific Services, LLC New Kensington, PA _______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com https://pairlist7.pair.net/mailman/listinfo/techtoolslist FTP site is: ftp://ftp.flippers.com/TTL/Test_Equipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/
People stayed away from the cameraman when he was working. Was looking at a site that sells lightbulbs and the DID have some flashtubes listed as UV flashtubes. On Tue, Oct 25, 2022 at 5:53 PM Dave McGuire < mcguire@mcguirescientificservices.com> wrote:
I'd bet they were special flashtubes, and I'd further bet that there was something else going on with those 2716s. That much UV would've also rendered any people nearby at least partially blind, and that'd never have made it out into the consumer camera world.
-Dave
On 10/25/22 18:48, Rodger Boots wrote:
My job, at the time, was with Rockwell Collins Radio which was showing off their WXR700 weather radar (used by Boeing in their large jet planes. The company photographer took the promo photos then the unit was set up for the demonstration. It was dead as a doornail. All 10 2716 EPROMS were erased. They reloaded the software and everything ended up working.
We didn't have them, but there were manufactures of EPROM erasers that used flashtubes that they claimed could erase a batch in about 5 seconds. They may have been special flashtubes, I don't know for sure.
On Tue, Oct 25, 2022 at 2:06 PM Dave McGuire < mcguire@mcguirescientificservices.com> wrote:
Same here. Xenon flash tubes don't produce much energy at the
~250nm
wavelength required for EPROM erasure; their emission spectrum typically falls off at about 350-400nm.
They'll crash if photographed while running, sure, but that's due to all of those transistors' junctions acting like photodiodes for a few milliseconds. But no erasure will occur.
-Dave
On 10/25/22 15:01, Andrew Welburn wrote:
I have photographed games running on my bench with the flash on and exposed windows plenty of times. Older games can freak out and crash/reset but there’s never any long term damage. Nintendo weren’t stupid, uncovered windows are not a great issue unless you have the exact wavelength of light for the needed exposure period at the right strength. The reality is in common use you are unlikely to encounter that set of variables lining up to cause damage.
Andrew Welburn (mobile)
On Oct 25, 2022, at 9:53 AM, John Robertson via Techtoolslist < techtoolslist@flippers.com> wrote:
On 2022/10/24 8:41 p.m., Rodger Boots wrote:
I'm more surprised more Nintendo games haven't had this problem. All it takes is a lack of window covers and an old-fashioned flash camera.
That's interesting - if a strobe tube (like used in a camera flash can actually erase the older EPROMs...I'll have to test that out today. I have these pistols and rifles that use focused strobe tubes to illuminate CDS cells on their targets for a large scale shooting gallery I own on a local midway (Pacific National Exhibition - Vancouver, BC). So it is an easy thing to fire up - so to speak!
John :-#)#
> On Sat, Oct 22, 2022, 8:56 PM Jose Luiz Martins <
joseluizmartins@gmail.com>
> wrote: > > Hi folks > > > Got some old 1980's Taito boards to fix and surprise! All 2716 are blank! > This happened with about 5 boards and more than 40 ICs most of them are > 2716 but some 2732 too. > > Do you guys is experiencing something like this? > > > Thanks! > > JL
_______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com https://pairlist7.pair.net/mailman/listinfo/techtoolslist FTP site is: ftp://ftp.flippers.com/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://ftp.flippers.com/TTL/Test_Equipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/
-- Dave McGuire McGuire Scientific Services, LLC New Kensington, PA
_______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com https://pairlist7.pair.net/mailman/listinfo/techtoolslist FTP site is: ftp://ftp.flippers.com/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://ftp.flippers.com/TTL/Test_Equipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/
-- Dave McGuire McGuire Scientific Services, LLC New Kensington, PA
_______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com https://pairlist7.pair.net/mailman/listinfo/techtoolslist FTP site is: ftp://ftp.flippers.com/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://ftp.flippers.com/TTL/Test_Equipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/
I don't know why I can't send emails to techtoolslist@flippers.com, I'm sorry to hijack this email. I WTB a filter board for a Data I/O 29B or one 29B Unit - Just the unit. Thanks! JL On Tue, Oct 25, 2022 at 8:18 PM Rodger Boots <rlboots2@gmail.com> wrote:
People stayed away from the cameraman when he was working.
Was looking at a site that sells lightbulbs and the DID have some flashtubes listed as UV flashtubes.
On Tue, Oct 25, 2022 at 5:53 PM Dave McGuire < mcguire@mcguirescientificservices.com> wrote:
I'd bet they were special flashtubes, and I'd further bet that there was something else going on with those 2716s. That much UV would've also rendered any people nearby at least partially blind, and that'd never have made it out into the consumer camera world.
-Dave
On 10/25/22 18:48, Rodger Boots wrote:
My job, at the time, was with Rockwell Collins Radio which was showing off their WXR700 weather radar (used by Boeing in their large jet planes. The company photographer took the promo photos then the unit was set up for the demonstration. It was dead as a doornail. All 10 2716 EPROMS were erased. They reloaded the software and everything ended up working.
We didn't have them, but there were manufactures of EPROM erasers that used flashtubes that they claimed could erase a batch in about 5 seconds. They may have been special flashtubes, I don't know for sure.
On Tue, Oct 25, 2022 at 2:06 PM Dave McGuire < mcguire@mcguirescientificservices.com> wrote:
Same here. Xenon flash tubes don't produce much energy at the
~250nm
wavelength required for EPROM erasure; their emission spectrum
typically
falls off at about 350-400nm.
They'll crash if photographed while running, sure, but that's due to all of those transistors' junctions acting like photodiodes for a few milliseconds. But no erasure will occur.
-Dave
On 10/25/22 15:01, Andrew Welburn wrote:
I have photographed games running on my bench with the flash on and exposed windows plenty of times. Older games can freak out and crash/reset but there’s never any long term damage. Nintendo weren’t stupid, uncovered windows are not a great issue unless you have the exact wavelength of light for the needed exposure period at the right strength. The reality is in common use you are unlikely to encounter that set of variables lining up to cause damage.
Andrew Welburn (mobile)
On Oct 25, 2022, at 9:53 AM, John Robertson via Techtoolslist < techtoolslist@flippers.com> wrote:
On 2022/10/24 8:41 p.m., Rodger Boots wrote: > I'm more surprised more Nintendo games haven't had this problem. All it > takes is a lack of window covers and an old-fashioned flash camera.
That's interesting - if a strobe tube (like used in a camera flash can actually erase the older EPROMs...I'll have to test that out today. I have these pistols and rifles that use focused strobe tubes to illuminate CDS cells on their targets for a large scale shooting gallery I own on a local midway (Pacific National Exhibition - Vancouver, BC). So it is an easy thing to fire up - so to speak!
John :-#)#
> >> On Sat, Oct 22, 2022, 8:56 PM Jose Luiz Martins < joseluizmartins@gmail.com> >> wrote: >> >> Hi folks >> >> >> Got some old 1980's Taito boards to fix and surprise! All 2716 are blank! >> This happened with about 5 boards and more than 40 ICs most of them are >> 2716 but some 2732 too. >> >> Do you guys is experiencing something like this? >> >> >> Thanks! >> >> JL
_______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com https://pairlist7.pair.net/mailman/listinfo/techtoolslist FTP site is: ftp://ftp.flippers.com/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://ftp.flippers.com/TTL/Test_Equipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/
-- Dave McGuire McGuire Scientific Services, LLC New Kensington, PA
_______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com https://pairlist7.pair.net/mailman/listinfo/techtoolslist FTP site is: ftp://ftp.flippers.com/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://ftp.flippers.com/TTL/Test_Equipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/
-- Dave McGuire McGuire Scientific Services, LLC New Kensington, PA
_______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com https://pairlist7.pair.net/mailman/listinfo/techtoolslist FTP site is: ftp://ftp.flippers.com/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://ftp.flippers.com/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://ftp.flippers.com/TTL/Test_Equipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/
participants (7)
-
Andrew Welburn -
Bill Karkula -
Dave McGuire -
David Gersic -
John Robertson -
Jose Luiz Martins -
Rodger Boots