[Techtoolslist] Fluke 9010a Troubleshooting w/ Omega Race

[Matt Rossiter]

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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