Voltage tolerance (Ultra X-Finity)?

S

scottmso

Limp Gawd
Joined
Apr 15, 2004
Messages
380
I recently put a few new parts in my system - an Ultra X-Finity 500W PSU (made by Wintech I think?) and an ECS mobo and CPU. It's been working fine for about a week until today when the system just shut itself off when I was using it. After that, it would shut itself off at some point when I turned it on, ranging from during the POST to Windows logon (depending on how long it was off.)

I was thinking the PSU would be a possibility for the issues. When I checked the voltages with a multimeter, the +5V seemed to be ranging between 5.50 and 5.60V. Is this a problem? Isn't the normal tolerance for PSU voltages about +/- 5%? I know this isn't likely the immediate cause of the issue (I'm thinking the mobo is the most likely problem) but I was wondering if it's safe. Thanks!
 
You're getting this reading from a drive Molex?

Weird that it's that high. So the shut down can be the PSU kicking an overvoltage protection as 5.50V would be over spec.

But the shut down problem sounds like heat. Is the PSU fan spinning when you turn the PC on? Is the CPU heatsink firmly mounted (can you grab it and move it any?) What exhaust fans are installed in the PC other than the PSU fan?

What's the complete system specs (which ECS board, type of CPU, etc.)?
 
Yes, this is from a drive Molex.

And it seems that I just figured out the problem. I looked at the CPU temperatures (something I wasn't even thinking about) and the CPU temp. was going above 70 degrees C. I looked at the fan and a temperature sensor (from my fan controller) was stuck in the fan! I had earlier heard a buzzing noise but I thought it was coming from a hard drive that was on the verge of dying. Now that I took it out, everything seems well.
 
Lol..I do repair housecalls (no, not "Geeksquad"...I have my own business) and you would be surprised how many times I find a cpu or vidcard fan either jammed or dead and causing all kinds of havoc that seem to be psu related. Sometimes the sinks alone are enough to let them run part-time as long as the airflow is good.
 
You must log in or register to reply here.
Back
Top