68kMLA Classic Interface
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| Click here to select a new forum. | | Performa 630 no longer powering up | Posted by: Goldfish64 on 2018-07-22 18:55:13
I've got a Performa 630 that was working until recently, and now it doesn't power up anymore. I can sometimes get it to power up, but most of the time there is simply no response. I suspect the power supply is at fault, as it always had and still does have a whine to it when plugged in. Would this be caused by capacitors in the power supply? As far as I know, neither the logic board or the power supply have ever been re-capped.
| Posted by: Bolle on 2018-07-22 23:01:45
I have two 630s with bad caps in the power supply.
On both there was no standby 5V present, so as a result the machine did not power up just like yours.
On one I did also swap one of the optocouplers and I am getting a steady standby voltage from that PSU now. The other one was fine after just recapping it.
| Posted by: Goldfish64 on 2018-07-23 17:10:27
Seems there is voltage on the 5V trickle pin, power supply continues to make a high pitched wine when plugged in though.
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