Sansun SN-W450 ATX - buzzing & burn marks

[ben7]

Re: Sansun SN-W450 ATX - buzzing & burn marks

What about a 7-watt ceramic?

I noticed in the pics above that the resistors are on the far side, farthest away from the fan; maybe they get no airflow at all right there.

-Ben

[quattro alex]

Re: Sansun SN-W450 ATX - buzzing & burn marks

Thank you for all the suggestions - in this case I've ordered both 120k and 150k 2w resistors as this was the closest I could find to the original items. I am assuming the ceramic ones will have a higher temperature threshold and therefore longer life?

[Th3_uN1Qu3]

Re: Sansun SN-W450 ATX - buzzing & burn marks

I am assuming the ceramic ones will have a higher temperature threshold and therefore longer life?

Yes, that is correct.

[momaka]

Re: Sansun SN-W450 ATX - buzzing & burn marks

That APFC circuit looks way too tiny. Might not be designed properly. I would say just get rid of the APFC circuit. The PSU uses an older half-bridge technology, so it should work fine without it.