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PSU Mobo Connector Problems

Q

QuantumSlip

Supreme [H]ardness
Joined
Feb 4, 2001
Messages
4,979
For some reason I started to notice my comp was acting funny; things wouldn't open half the time, and eventually it hard locked. I jump into the BIOS and find that my 5V was at 4.7 V. I had a hunch, and took alook at my mobo connector. Every single 5V connector (the plastic part) looked like it was burned to some degree, and one connector I could see through to the metal contacts. Having had this problem before, I cleaned and reseated it, and voltage levels returned to normal. This is the 2nd time it's done this, and I now know it's not the PSU because this also happened with another PSU.

Anyways, my question is this: would I still be safe in using this PSU with a new mobo? It's a thermaltake 480W Purepower, and I'd hate to throw it out if there's really nothing wrong with it.
 
So the main ATX connector is scorching and you would hate to throw it out if nothing is wrong? Have you run a different PSU?
 
Spectre said:
So the main ATX connector is scorching and you would hate to throw it out if nothing is wrong? Have you run a different PSU?
Click to expand...

The previous PSU was an ANTEC, so I highly doubt I got 2 PSU lemons...
 
QuantumSlip said:
The previous PSU was an ANTEC, so I highly doubt I got 2 PSU lemons...
Click to expand...
Well if it is still happening then there would appear to be an issue with the ATX connector on the mobo.......which seems a little odd.......but anything is possible. Is there any damage in the ATX connector on the mobo? I
 
Ok.

Used to always see this with Epox boards. That's why I ventured the guess. ;)

Something you have installed on your board or the board itself... possibly a particular PCI card, is using 5V but has a poor ground or poor contact, etc..
 
I have seen this before. What I usually do it take the Molex apart and squeeze the female connector part to make it a bit tighter. All these plugs and sockets are supposed to be “to spec” but it doesn’t always work that way.

A slightly lose connection will cause resistance thus creating heat. The resultant heat causes the burning you see.
 
BillR said:
I have seen this before. What I usually do it take the Molex apart and squeeze the female connector part to make it a bit tighter. All these plugs and sockets are supposed to be “to spec” but it doesn’t always work that way.

A slightly lose connection will cause resistance thus creating heat. The resultant heat causes the burning you see.
Click to expand...

That too. Essentially, somewhere there's resistance. My guess, since you've gone through two power supplies, it's the board's connector! ;)
 
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