Dead a1200

musojon74 · 24 November 2016, 14:24

Hey guys.

So, my a1200 died. I'm not sure what was going on, had a green screen initially so checked and reseated chips etc. Then a blue / purple screen (will post screenshots later). When my blizzard is in I just get a grey screen. In neither case will anything boot, even after i've disconnected everything.

I'm guessing it'll be the caps although none of them are bulging at all?

Daedalus · 24 November 2016, 14:51

Most of the caps don't bulge when they're failing - the small, silver ones simply leak downwards onto the PCB, dissolving any traces underneath them, often without showing any outwards physical signs of a problem. It could well be that some critical address or data lines have been eaten through, but it could also be some other issue with one of the custom chips. Fortunately, most of that sort of damage can be repaired easily enough...

24 November 2016, 14:24	#1
musojon74 Registered User Join Date: Dec 2007 Location: The World Age: 50 Posts: 476	Dead a1200 Hey guys. So, my a1200 died. I'm not sure what was going on, had a green screen initially so checked and reseated chips etc. Then a blue / purple screen (will post screenshots later). When my blizzard is in I just get a grey screen. In neither case will anything boot, even after i've disconnected everything. I'm guessing it'll be the caps although none of them are bulging at all?

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24 November 2016, 14:51	#2
Daedalus Registered User Join Date: Jun 2009 Location: Dublin, then Glasgow Posts: 6,379	Most of the caps don't bulge when they're failing - the small, silver ones simply leak downwards onto the PCB, dissolving any traces underneath them, often without showing any outwards physical signs of a problem. It could well be that some critical address or data lines have been eaten through, but it could also be some other issue with one of the custom chips. Fortunately, most of that sort of damage can be repaired easily enough...

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