Electronics > Repair

PC Power Supply

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strawberry:

unplug, wait to dischage large capacitors, remove PCB and check for faulty PCB, check for shorts in main switcing devices on mains side. check if stanby IC under copper heatsink is ok and there is no open PCB trace to 400VDC source

plug in with PCB removed, check if voltage on large capacitors are ~400VDC, check if standby 5V supply voltage is ok

vidarr:

--- Quote from: strawberry on November 15, 2018, 08:33:05 pm ---
unplug, wait to dischage large capacitors, remove PCB and check for faulty PCB, check for shorts in main switcing devices on mains side. check if stanby IC under copper heatsink is ok and there is no open PCB trace to 400VDC source

plug in with PCB removed, check if voltage on large capacitors are ~400VDC, check if standby 5V supply voltage is ok

--- End quote ---

Thank you. I will do that tomorrow and Saturday. No doubt I will have some questions along the way. Thanks.

coromonadalix:
This small transformer can be the xformer coupling signals between the smps ic's and the power mosfets section, unless thermaltake is willing to sell you one you're out of luck.

It may exist a clone of this one in other branded psu ... ?

Wan Huang Luo:
Just an aside, how is the power delivery in your area? What voltages do you get at the taps? Do you ever get voltage spikes? Is it possible that the circumstances of your location's mains power had a hand in causing your issue?

strawberry:
dont know but this SMPS yellow MOV seems intact

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