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Old 07 August 2019, 21:26   #1
danko
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Amiga 500 REV 5 black screen

Hi,have a mainboard from amiga 500 rev 5,when power on received a BLACK SCREEN, try to disconnect all,tested with scart cable and PSU only (working) any idea for this problems?
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Old 07 August 2019, 21:34   #2
demolition
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It can be CPU, Agnus, Denise, a CIA chip, Gary, KS ROM, reset circuit etc etc, basically anything. Best way to start diagnosing a black screen is to find another working A500 and start testing the ICs one at a time.

Can you tell whether you get a black scren (with sync) or no video output at all?
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Old 07 August 2019, 22:46   #3
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Quote:
Originally Posted by demolition View Post
It can be CPU, Agnus, Denise, a CIA chip, Gary, KS ROM, reset circuit etc etc, basically anything. Best way to start diagnosing a black screen is to find another working A500 and start testing the ICs one at a time.

Can you tell whether you get a black scren (with sync) or no video output at all?

Thanks! the problem is KS replaced with another one!

Last edited by danko; 22 July 2021 at 23:47.
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