Switch mode power supply. Help!

[juh1]

I tried repairing a switch mode power supply. Whenever I measure the output, it gives the expected voltage rating. But when I supply it to a load, it does not give anything. What can be the problem? Please help. Thank you!

 

[electronicslab]

Post photos , details .

 

[Radan52]

In this situation, it is deficient in creating pulses. Check as following:

1 - pulse width control module.
2 - The current limiting modules.
3 - Driver switches.

Good luck.

 

[Jibby]

Problem could be Overload sensing gone defective.