Trouble finding an element on board!

[smaniak]

Hi guys.
Recently, I troubleshot PC power supply, that was dead. It blows his fuse.
The power supply is - SILVER POWER 650W - SP-SS650
I change the fuse, Bridge Rectifier, Capacitator, Transistor and some other elements... Now it's turning ON without blowing fuse, but there is no low-voltage (5V, 12V ...)
In this power supply, there is a board that I think is for switching ON low-voltage, and I want to see if the IC is OK, but I can't find what model is...
IC p/n: U 98CN7DK UCC28515DW
I put some pictures on the board and IC.

[eccerr0r]

Re: Trouble finding an element on board!

Probably compatible with http://www.ti.com/product/UCC28515
Looks like a multiple failure issue now... ensure you have APFC boost voltage and 5VSB at least before proceeding.

[smaniak]

Re: Trouble finding an element on board!

So finally I have 5VSB, but I don't know what is this APFC boost voltage...

[budm]

Re: Trouble finding an element on board!