I read in this http://www.electronicrepairguide.com/atx-power-supply-repair-guide.html ...

About the fuse - i really cannot locate it on the board

"Whenever the main fuse have problem, one has to check on the semiconductors such as the bridge rectifiers, power Fet, transformer primary winding and etc."

The Bridge Rectifier are 2 and are ok
Power Fet - on the heat sinks i see 2+3 fcp20n60 They are all good too
I have desoldered main HV transformer and dont see visible damage on it
The rectifiers if i think right are 8 and all are ok - ym3045n
On the heat sinks i see too byc8-600 which is good

Now where to go?

If i remember right the power supply had only 5v stb

Thanks in advance

 

What you have there is a switchmode psu, unless you have the circuit diagram, or experience of repairs, you won't repair it.

 

What you have there is a switchmode psu, unless you have the circuit diagram, or experience of repairs, you won't repair it.

Agreed.

If the fuse is on the board it may be a wire-ended fuse hidden inside a piece of heatshrink tubing. There is something like that towards the top right of the picture hiding behind the two torroids. Even if you find the fuse and replace it it is only going to go bang again.

 

The fuse on the primary side looks like its coated Black at the top right pcb.( follow the mains input to the pcb)

Cue music from Mission Impossible......

 

I think now i see the fuse. I know that if only replace it nothing great will happen.

Is this as begining good?

https://flic.kr/p/TnUfpe

If i remember right the 5V stb was avialable. If i should i will put back the HV Transformer and The heat sinks(with elements on them) and confirm that 5v stb.

Now where to look for? "силовая част" "APFC" and check element by element?

 

Reading the scheme i see
2r8. its Rt(ntc). what should be 1 normal value when measuring in normal room temperature?

On two Resistances i see
10E - how much it`s that ?
I see on one E03 and in the resistor is shown sign V. What do they mean?
I am seeing APFC module.
C12 is shown only with its number. It has no value. This is bug from the software used to make the picture or is something technical?

That`s it for now.

I hope this time someone to answer