PSU passes paper clip test but when plugged into motherboard fan first spin
So I have a rosewill 450 arm passes the paper clip test but when plugged into TWO motherboard it has bad coil whine is it the psu or mobo?
Reply to BlueAngelOP
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More aboutpsu passes paper clip test plugged motherboard fan spin
paperclip test* is mostly useless, it can only determine that the power supply can power itself with no load. it cannot test that the PSU can support an electrical load.
if the whine happens on two differing motherboards it cannot be the motherboards. elimination leaves the PSU.
*paperclip test is like a mirror under the nose of a sleeping person. breathing or no that is all you learn. not how healthy, spy or vigorous. the PSU is breathing, but the spinning fans told you that.
how old is the ARC? if nearing 3 years I suggest replacement . if under 3 years you can send it back for repair but you will have to pay for the labor costs for repair, parts are covered.
Reply to R_1
Paperclip test is useless. It like turning the key in your car, and the dash lights up. Says nothing about the engine and transmission.
Bad coil whine from that PSU means you need a new PSU.