Power Blown - PC Won't Turn On

JamesU2005

JamesU2005

JamesU2005

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Joined
30 Nov 2005
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London
Right, the power in our house went out today.

Our surge protector broke in the process which I have now changed.

All the items plugged into the new surge protector work OTHER THAN the PC.

I'm guessing that the PSU has blown, but is there anyway I can be certain it's the PSU and not something else?

EDIT: Is there such thing as a motherboard power reset?
 
JamesU2005 said:
I'm guessing that the PSU has blown, but is there anyway I can be certain it's the PSU and not something else?
Click to expand...
Yes. Multimeter measurements on six wires between the PSU and motherboard will define everything in that circuit as either perfectly good (without doubt) or suspect. Even that fuse would be identified good or bad without replacing anything. Numbers report that much. Labor takes a whole minute.

Set the meter to 20 VDC scale. Touch the purple wire before and when the power switch is pressed. Post that number (to three digits) Do same with the green and gray wires. And measure any one orange, red, and yellow wires when the switch is pressed. Everything necessary to have a useful reply is in those numbers.

A reply says - without doubt - what is and is not problematic. IOW an answer without speculation. Not even one wire is disconnected until you are ready to fix that failure. One minute of labor for a better reply.

Without those numbers, your every reply will be 'try this' or 'swap that and see what happens'. IOW wild speculation. Your only two options. Keep swapping good parts until something works. Or get numbers on a meter to have a complete reply immediately.
 
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