Dig dug not booting

Malice95

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Donor 2011
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Picked up a Dig dug..

When it goes to boot up the following happens.
In the video it says
"RAM OK
ROM OK"



But it doesnt go any further (Cycles). Any suggestions on
where to begin troubleshooting this?

Thanks,
Malice95
 
Have you checked your voltages from your ARII? Reseated your chips? Cleaned your edge connector?

Might need a Big Blue, pokey, etc...
 
That's most likely your main Z80 resetting. Reseat all your Z80s (3) followed by the custom chips. Pay close attention to the 06XX IC. I have found it to be badly tarnished/corroded. When pulling these chips to check/reseat, be very careful as the legs are most likely very brittle.
 
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