Re: Help diagnosing problem.

well I did two things turned it on and did see the tube glowing in the back, I guess i missed it before. I also held a neon tube by the flyback and I did not see it light up so I may not be getting power to the transformer. as far as rom I have no idea the stickers of the chips that work are both faded, so I put the old ones in and unbent the two pins (there would not be a reason to keep two of the rom pins unconnected from the cpu board is there?) but with the pins bent back in to shape it now beeps again and the roms in there now are the H ones and the I/O is a B.

Patrick

On May 3, 2008, at 8:52 PM, Ray Arachelian wrote:

>
> Ray Arachelian wrote:
>> controls the contrast DAC when the DEN signal is off. Try swapping
>> the
>> two VIA's on the I/O board (if they're both soldered). Or if you can
>>
>
> s/soldered/socketed/g
>
> :-)
>
> >

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. Received on 2015-07-15 16:43:14