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Amiga computer related discussion => Amiga Hardware Issues and discussion => Topic started by: dougal on April 18, 2011, 02:16:53 PM
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My A600 is starting to give some problems.
Sometimes when switched on it goes straight to a "Software Failure" and when i click Left mouse button it just freezes. Sometimes it manages to go to the boot screen.
Sometimes it is switched on and works fine. Most times its ok.
I also noticed that i sometimes hear a strange sound when i turn it off coming from the speakers for about half a second.
The A600 has 2MB Chip ram and Kickstart 3.1. No Hard drive (YET).
Am i looking at a faulty CAPS issue here?
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Bad socketing, bad RAM, bad ROMs, bad caps, motherboard acid from RTC battery?
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The only chip which is socketed is the Kickstart - if you're up to disassembling the machine, check that for dirty contacts etc. Sometimes just removing it and reinserting it does the trick. Unless you have an add-on card, there's no clock battery either so don't worry about that. Bad caps are a possibility, check especially the electrolytic ones near the PSU connector at the back left, any showing signs of bulging and/or leakage should be replaced immediately.
If you have any other add-ons connected, remove them and see if the issue goes away. If the ROMs are EPROMS, they might be failing too... Perhaps some small metallic fragments have worked their way under the metal shielding and are shorting out the rear of the motherboard, or the plastic insulating sheet is damaged between the bottom of the motherboard and the RF shield. After that it's possibly a bad solder joint or a failed chip somewhere, but that'd be pretty rare...
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Looks like it was the 1mb chip ram expansion is faulty. I switched it off and the A600 is working perfectly but of course now with only 1mb.
Will open another thread re the expansion.