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Power Supply Repair Guide ??
Luigi:
Due to the fact that we get more and more non-working switching power supplies I'd like to try and repair at least some of them. The errors are different: no 5V or 12V output, humming, etc.
Are there any repair/test guides available?
I'm speaking of such PSUs:
grantspain:
because these are so cheap to buy no one usually bothers,depending on whether it blows the on board fuse or not points towards the problem
usually faults on these are bridge rectifiers,diodes,caps and power ic's/transistors
if its a case of missing voltage then just trace back the output
Luigi:
--- Quote from: grantspain on April 05, 2007, 05:01:43 am ---because these are so cheap to buy no one usually bothers,depending on whether it blows the on board fuse or not points towards the problem
usually faults on these are bridge rectifiers,diodes,caps and power ic's/transistors
if its a case of missing voltage then just trace back the output
--- End quote ---
I did not realize that all folks here are millionaires ;)
A working PSU costs 40-50€ (here in Germany). We have at least 8 non-working units. If I could make 1 working out of two non-working I would be very happy :)
Concerning the lack of power...you are right. I should be able to just re-trace from the output point ....thanks for this little hint :)
grantspain:
i pay about 30 euro's for mine,where are you buying yours from?suzo?
SirPeale:
Bad caps are often a cause. I'd start there.