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No Power In Kinwin PSU ABT-800MA1S
By Jestine Yong on June 24, 2013
Please help me to identify a fault on Kinwin PSU ABT-800MA1S. The PSU is dead and silent with fuse good. Voltage testing:
AC input is ok
The filter capacitor is ok
The Supply voltage of power IC (ICE2A0565Z) is hoping from 10.~ V to 11.~V. It must be 16V? So a fault is in primary side? I have tested resistors capacitors and transistos, they are ok.
Answer:
If the secondary side output diodes are good then possibly the power IC or the corresponding components have problem. Make sure the power supply is connected to a load otherwise it will give inaccurate reading.
If the power supply is using optoisolator ic and TL431 IC then direct replace it and retest.
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