Electronics > Repair

Power Supply model SQ-White 600W

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wraper:

--- Quote from: GGMM on September 10, 2024, 09:53:47 am ---What I find very strange is that I have a short circuit between the 5v Standby output connector and the ground. (Test in both directions of the multimeter)

--- End quote ---
Super easy and cheap repair. Shorted Schottky diode after secondary winding. Electrolytic capacitors do not fail short BTW.

GGMM:
re,

I removed the diode in question
It’s a CSRS545, in the end it was because now it is a short circuit.

https://www.alldatasheet.com/html-pdf/971565/CITC/CSRS545-A/98/1/CSRS545-A.html

Amazing when you see the size of this one!
The short circuit has disappeared. normal.
Now, what to replace?
The same yes, must order.
Another, I have a full TV motherboard with integrated alim.
To see if something similar.
cdt

wraper:

--- Quote ---Now, what to replace?
--- End quote ---
Basically any Schottky diode with appropriate voltage and current rating.

GGMM:
Hello Wrapper,

This week i received the diodes.
I changed the schottky diode and the power supply  works perfectly.
Costs 10 diodes for 2 euros, that is 20cts the repair and 1/2 hour of time spent.
Coool...
Nb:  The fan is really quiet. Think good material.

Cdt

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