Coolermaster Extreme Power Plus 550W design problem

[Nikochan]

Re: Coolermaster Extreme Power Plus 550W design problem

This is a rather crappy picture of the PSU. The burnt coil marked with the red arrow.

[goodpsusearch]

Re: Coolermaster Extreme Power Plus 550W design problem

This is the APFC coil. You should find a replacement coil from a dead psu. You could try to rewire the coil, but the core material is probably affected too.

[Nikochan]

Re: Coolermaster Extreme Power Plus 550W design problem

I don't think I have a dead PSU that features Active PFC on it. Would Farnell or Digikey have anything to replace that?

[ben7]

Re: Coolermaster Extreme Power Plus 550W design problem

I don't think I have a dead PSU that features Active PFC on it. Would Farnell or Digikey have anything to replace that?

Yes they likely would, BUT you would have to get the schematic of this PSU to determine what inductance it has, and other core material properties, etc...

[Nikochan]

Re: Coolermaster Extreme Power Plus 550W design problem

Would this help to figure it out? Schematics are towards the end of the document. You can search for RP-550-PCAA-E2 in the PDF which is the product number of the PSU.



There is a section around the coil on PCB that marked as L13 and according to the above document, the coil could be either one of these:

CH270060 (page 146)
CS270060 (page 149)
T106-52 (page 152)

The one I have resembles the T106-52 though.





This is a document for T106-52 core which indeed matches the size of mine.

https://cdn.badcaps-static.com/pdfs/...43fffdea41.pdf

[c_hegge]

Re: Coolermaster Extreme Power Plus 550W design problem

Good find.

Try http://uk.farnell.com/bourns-jw-mill...-15/dp/1189587

That's about the only one which matches the inductance, and has the pins in the correct position (most other coils mount lying down on the PCB)

EDIT: You might also want to check the other PFC parts too (The transistor, diode and capacitor)