Question about Acer Aspire L100 PC Desktop

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Status Didn't make it to Radio Shack but over the weekend did find enough time to harvest some 1000 mic caps from an old P II motherboard and replaced the bloated ones in the Acer. There is some improvement. Now when I press the front panel on switch, the fan comes on and will shut down if I hold the switch the required 9 seconds (before there was no response). There are no front panel lights, no video output and no apparent POST or boot activity.

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Sounds like you could still have some blown caps on the 3V supply or worst still a blown regulator caused by excessive ripple from the faulty caps.

If the thing is now partialing powering up and your seeing fan activity the 12V and 5V rails are ok so im guessing theres a problem with the 3v3 rail. This could be down to more failed caps or a faulty regulator which could of been damaged by excessive ripple caused by the failed caps.

Best I can suggest is probing the regulators looking for the 3V3 rail, cant tell you which to probe as my boxes have been returned to the client now im afraid.

Regards

Nick

Posted on Aug 25, 2008

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