> On Thu, 7 Jun 2018, Aaron Jackson wrote: >> The VAX turns on and the status LED stays on F. The DC lamp does not >> illuminate on the PSU. 5V rail appears fine but there is nothing from >> the 12V rail. There were some *very* dodgy looking caps which I have >> replaced, and some *very* exploded MOSFETs, which I have also >> replaced. > > If that's all that you replaced, no wonder it still doesn't work ;-) > Usually shorted power transistors in SMPSUs also break one or more fusable > resistors, maybe some diodes, maybe the driver IC or transistors. > So if you have anything that "exploded" in the power supply, be sure there > is more work to be invested that replacing the obious parts. > > Christian
Haha, okay, seems reasonable. I'll have to probe about a lot more then. Not giving up quite yet, even though everything I have read about this power supply has said that it is difficult to repair. So far, I would agree with such a statement. Thanks, Aaron.
