July 2016 - TechToolsList - listserv.classicarcade.com

9010 fan question
by Tony Jones 02 Sep '16

02 Sep '16

My 9010 started making a weird pulsing noise which I tracked down to the fan. Like it was trying to start but couldn't. I've never given the fan any thought before, does it run all the time? It's just two wires off the motherboard (which weren't pulsing per my scope) but these go to some kind of fan sending unit which feeds 4 wires to the physical fan. Is this some kind of temperature control? The fan blades didn't spin easily, quite a bit of resistance so I was assuming the fan itself was the problem rather than the sending unit. I have the model# specs for the fan so I'll look for a replacement but that might be challenging, replacing just the fan part and connecting to the existing grey sending unit may be another option. I couldn't find any previous mention of this in the archives, curious if anyone has been here before? Thanks! Tony _______________________________________________ Techtoolslist mailing list Techtoolslist(a)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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Quarter Arcade
by William Stillwell 30 Jul '16

30 Jul '16

Looks like it went bye bye :( Now it's a re-direct to some collector site? Anybody have a mirror of it? I can slap up on my server. _______________________________________________ Techtoolslist mailing list Techtoolslist(a)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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Poachers Rope Tech Site Owner?
by Jess Askey 17 Jul '16

17 Jul '16

Hiya all... Does anyone know who runs this site? None of the contact email addresses seem to work from there. https://sites.google.com/site/poachersrope/home thanks... Jess _______________________________________________ Techtoolslist mailing list Techtoolslist(a)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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Proel circuit and layout
by Dave Caroline 11 Jul '16

11 Jul '16

I am cataloguing circuits/manuals I have and today dug out a circuit and pcb layout of a 6502 based system marked Proel srl Turino OAW2 a quick google tells me this may be a copy of the Exidy Spectar https://en.wikipedia.org/wiki/Spectar Dave Caroline _______________________________________________ Techtoolslist mailing list Techtoolslist(a)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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realtime clock on Fluke 9100A/9100FT
by Tony Jones 09 Jul '16

09 Jul '16

Not sure if this is useful info .... I'll throw it out there for the archives ;-) Both the RTCs on my 9105FT and 9100FT went bad not long after I got them. The original is a Dallas 1287 (same as the IBM PC). It is a discontinued part. I bought a pair of 12887As from eBay which is a commonly used modern day "replacement". The 12887 has two banks of addressable memory (128 bytes vs 64 in the 1287) and the A variant has a RAM clear pin. Anyhow, neither 12887A worked. The system would constantly report at boot that the RTC battery needed replacement, this seems to occur when the 9100 reads null (epoch) data from the RTC. The 9100 is able to tell if it's a new chip as at first boot it instead reports that the RTC is uninitialized. I was floating the RAM clear (per datasheet), so my guess is the second bank was the issue. So it's possible a 1287A would have worked. There is an appnote #503 from Maxim addressing this issue of possible incompatibility. Anyhow, I purchased two 1287s from eBay (china). I was a bit worried about a fake as it's an obsolete chip but they both worked fine. There is also a tutorial out there on breaking open the 1287 packaging and adding an external piggybacked battery. I just desoldered and socketed and went for a replacement chip. HTH Tony _______________________________________________ Techtoolslist mailing list Techtoolslist(a)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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Best Trifurcon Crimper?
by Brad Gass 08 Jul '16

08 Jul '16

I'm sick of doing the Molex two-step, and am in dire need of a new terminal crimper. Is the Platinum 16801C still the general consensus of being the best "budget" crimper for Trifurcon/Molex terminals? I'm not opposed to spending a bit more (up to the $60-75 range, maybe $100 if it's *really* worth it) on a different crimper if there is a good reason to go that route. But, I also don't want to buy five different crimpers to find a "good" one if I can avoid it. Thanks for any input and guidance in advance! --Brad _______________________________________________ Techtoolslist mailing list Techtoolslist(a)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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