Re: Fluke 9010a Troubleshooting w/ Omega Race

I'll have to try your suggestion. It seems like I can get through the ram
tests if I ground pin 1 of k6 (74LS00) and maybe do a manual reset by
grounding R107. I just want to get to the point where the game self-test
starts to work. I basically use the fluke 9010a ram test(s) to quickly
see what data/address lines are faulty. Then it's pretty easy after that.

The rom signature test doesn't seem to work right, so I just verify each
of them with my rom programer.

I did finish fixing one Omega Race today, I just have one more. They are
a huge pain because most of the time I have to clean up the corroded mess
and rewire some of the damaged traces.

Matt

On Mon, 22 Jan 2007, John Robertson wrote:

> I'm beating up an Omega Race board right now for a customer and I
> find it is not very pod friendly.
>
> I found that if one clipped pin 8 (9? - I'm at home right now) of the
> final reset stage and tied it high that this would deal with the
> negative RESET stuff.
>
> I had a lot (8) of the 2114's that were bad and ended up making my
> Xeltek Super Pro be able to test those suckers as I do not have a
> stand-alone RAM tester that would handle the 2114.
>
> Problems with reading the Vector ROM/RAM have yet to be solved, even
> had trouble reading the game ROM for a while - flaky 74LS138.
>
> I hate getting working on these corroded boards. Not worth my time,
> yet too much of a challenge to discard...I love puzzles too much!
>
> John :-#)#
>
> At 12:36 AM -0800 1/22/07, Matt Rossiter wrote:
>> This might be more of a Vectorlist question, but I thought I might try
>> here.
>>
>> Right now I'm using a 100% working Omega Race boardset to make sure I have
>> the correct setup using the Fluke 9010a and Z80 Pod.
>>
>> First of all, the boardset just won't run with the Z80 Pod. I can see
>> that the Reset line is pulsing. It won't run if I disable the watchdog
>> circuit either. *sometimes* I can get it to do a Quick Ram Test
>> successfully. Other times I get data error messages and if I do a bus
>> test it will report a bunch of data lines tied together. Of course, if I
>> put a normal z80 processor back in the game works perfectly fine.
>>
>> So, I'm just wondering if anyone out there knows how to properly setup an
>> Omega Race boardset for troubleshooting with the Fluke 9010a and Z80 pod.
>> This Pod should be working fine since I used it recently on a Pac-Man.
>>
>> thanks
>>
>> Matt
>
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Received on Mon Jan 22 20:07:52 2007