Hi,

Finally replaced all of the shorted 4148's and resistors and an blown tl431 on my FSP300-60GTF after 5VSB going crazy and destroying it self. Those components also made the secondary transistors appear shorted (while in reality they weren't).
Powered it on through my dim bulb tester and they (bulbs) only flash once meaning primary caps are getting charged, but that's it. No 5VSB, PS_ON voltages.
I am sure I have replaced the components correctly and that there weren't any shorted/blown traces left.

Any ideas where to go next?

So I have a cheap non working ATX PSU that I was learning to repair a decade ago. At the time, it blew the main fuse, bridger rectifier, NTC, and primary 9A 900V MOSFET. Replaced all except the MOSFET. 5VSB came back online. Then I poked around in it so much, measuring components one by one to a point I accidentally made the 5VSB circuit primary side went bang. Blown the AP8022 (Viper22A) PWM chip, along with a low resistance resistor and the PC817 opto isolator. I replaced them all.

In the process of poking around, I also lost a zener diode that stabilize the voltage coming from...

TV was fixed just after removing Samsung's rear snap cover.

This curved TV's construction is rather interesting. When the snapped on back is removed, rest of the TV will relax the curvature. Top of LCD panel is loose as it wants to straighten out against the slightly curved bezel. Snapped back provide most of the curvature shape. So just simple disassembly of rear cover will allow the rest of the TV frame to relax its curvature. Thats probably what fixed it but no idea which connection. 4x LEDs are edge lit.

Maybe PSU->backlight connector didn't have a good contact?...

Hello...

I got my self a dead CM V700 PSU, with nothing on +5vsb

I have tried to fix it for the past 2 week, and I'm stuck... so i guess i post it here to get some pointer before i scrap it..

As you can see in photo, the psu still pretty clean, no visible damage or bulging cap.. when i got it, it still has CM seal on it

The +5vsb system use ICE2QR4765, I have trace and measure the voltage on ICE2QR4765 and the only voltage reading i got is in VCC 4.8v, Drain 310v and FB 3v.

I have read the datasheet and and still can not...

Posting this in case it helps someone.

Had a Dell Vostro 14 3435 AMD with 2 amber / 1 white LED. Mainboard LA-M36AP.

Symptoms:

• Fan spins once
• CPU and RAM get slightly warm
• No POST, no display
• LED code does NOT change with display connected/disconnected
• Board powers on/off by button normally
• Power rails looked OK during initial power-on and CPU rail was not shorted, so it didn’t look like a dead CPU.

What fixed it:

• I had a BIOS chip from another same board (CPU-dead board, BIOS dump was already repaired for that board from here Badcaps)
• Simply removed the

...