pc psu want to fix

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mecc

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hi there
please can anyone help me?
my pc psu not working there is no output voltage at all. only standby +5 volt getting properly. i oppened the psu case. it loosk ok no burn or leaking cap, everything looking good. what went wrong? i want to repair it please help me
thnks in advance
 
If nothing is 'blown', then it may just be the startup resistors, which are required for the supply to start, then it feeds itself.

Look for a couple of highish value resistors, they usually use two in series (which is probably why they fail) - they go high or O/C.
 

If you are trying to run it outside of the computer case, it might need a load to start up, or the green wire on the motherboard connector needs to be connected to ground.

-Ben
 
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