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Author Topic: A600 voltage problem  (Read 2593 times)

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Offline ferix

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Re: A600 voltage problem
« on: September 02, 2009, 03:42:24 PM »
Hmm... I think It could be a broken CIA (8250). They control the keyboard and some features of the fdd, like the motor on/off...
But I don't know how to test It on an A600.

Good luck!!

Edited:

The 12v line seems to be Ok, 11,5v is near from normal. The 5v line is too low, may be It affected to the CIAs.
Also, a broken chip could be a "power muncher"...
« Last Edit: September 02, 2009, 03:46:41 PM by ferix »
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Offline ferix

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Re: A600 voltage problem
« Reply #1 on: September 03, 2009, 07:49:20 AM »
Quote from: harmonica;521853
If the problem would be caused by those CIAs, is there any way to test it if it's real cause?

Sorry, I don't know how to test It on an A600... On an A500 you can swap the CIAs or even remove them, but A600 has them soldered. So, I'm planning to desolder all soldered customs in my A600 and put some sockets in place...
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Offline ferix

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Re: A600 voltage problem
« Reply #2 on: September 03, 2009, 11:57:55 AM »
I suggest you replace the caps first.
It's cheap, and It's worth trying.
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