Re: Spy Hunter help

The test switch behind the change door doesn't change the behavior.

I disabled the watchdog and the cycling stopped and the music played
once through, but the game screens never appeared.

I'll see about swapping RAM next. Thanks.

Rich

On Sep 5, 2009, at 7:04 AM, Franklin Bowen <Franklin@Bowen.net> wrote:

> Have you checked whether the watchdog is tripping the reset?
>
> Have you turned on the test switch inside the front door?
>
> Since the board is in an unknown state, I think the only way to test
> them is a RAM tester or stick them into a known good board (any
> game) and see if it works.
>
> Franklin
>
>
> Rich Gopstein wrote:
>> I verified all of the ROMs. Two were swapped on the Sound board,
>> but the rest were fine. I removed the battery and jumpered the +
>> end to +5.
>>
>> The game behavior hasn't changed. It cycles through a few screens
>> up to a crosshatch, then starts again. I tried the reset button on
>> the CPU and on the Sound board, but they don't help.
>>
>> Any other thoughts? RAM? Is there any way to check the RAM?
>>
>>

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Received on Sat Sep 5 08:20:04 2009