PSU, motherboard, or power switch???

[byroncheung]

PC won't turn on after power outage. I did the paper clip test on PSU, fan spin when the PSU pins are shorted. Also did the power switch test by shorting the pins of the switch with screwdriver, no response. So I thought MB was toasted. Found a same MB with CPU and RAM on ebay, just dropped it in but still won't turn on

I have read that paper clip test doesn't 100% guarantee the PSU is working. I'm thinking getting a new PSU to test it. What do you guys think I should do next? The power switch looks pretty hard to get to, I'm hoping it is not the switch went bad... Also I'm thinking given that the failure happened after power outage, I'd think it should either be the PSU or the MB? Trying a new PSU is probably the best bet?

 

[Isleepalot]

I would get a new psu just to test and then if no boot, then just send it back. Next time, make sure you pc is connected to a power serge.

 

[byroncheung]

I would get a new psu just to test and then if no boot, then just send it back. Next time, make sure you pc is connected to a power serge.

yea i'm gonna try that tomorrow... hope a new psu will do it... if not, what would you recommend? try a new switch (strange that shorting the switch pins didn't work)

 

[Isleepalot]

If you shorted the pins on the board and no boot, then motherboard. That rules out power switch.

 

[byroncheung]

If you shorted the pins on the board and no boot, then motherboard. That rules out power switch.

as i said in the original post - i tried new MB already... so most likely the PSU i guess... finger crossed for tmw trial

 

[Isleepalot]

Oh ya right my bad. Let me know if it was that psu.

 

[byroncheung]

Oh ya right my bad. Let me know if it was that psu.

yeah it boots with a new PSU... so there we go, paperclip test of PSU can be deceiving!

 

[Isleepalot]

Yep, they are not 100%