Hello! I'm having trouble with the same psu. The 5V STB rail is ok, but the psu does not turn on. I found that the R36(2R2) is burned in my case. What is the cause for this resistor to burn? I haven't removed the pfc transistors and diode from the pcb, but they measure ok in circuit.
Edit
My psu seems to be a different revision. But it looks like the circuit is the same. I desoldered the R36(was placed between the red circles on the image) which is somewhat burned and it measures 71kOhms. Inside the green circle it seems like there is a burned track. D10 is not smd in my case, it is through whole marked with yellow.