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Author Topic: a500 black screen troubleshooting  (Read 2113 times)

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Offline powrslaveTopic starter

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a500 black screen troubleshooting
« on: April 13, 2016, 03:15:41 PM »
A500 rev 6a
only power led lights up
only thing connected is keyboard (with/without) and 520 rf
system board on the bench
no caps lock LED

Aside from caps, could it be a bad 68000 or a bad 1.3 ROM?
I'm considering changing the ROM out but was wondering if a bad ROM would cause this.

Power up, screen changes to a darkish gray and then goes black.

I will be testing all caps with esr as soon as it arrives.
In the meantime I've already changed:

R406
c401
c402