Hey guys, as you can see I'm new around here though I have known about bleeping fo awhile. Just thought I would pick your brains about a weird problem I have.
I have a most peculiar problem I have a machine I built in late 01, ran it for awhile, then upgraded, and it went to my mother who used it for a few years, she upgraded in 08, and I got this machine back. It has been sitting around for over a year, and last week I dusted it off to setup a small file server on my local net.
Everything seemed to go ok when the next morning I woke and turned on that machine and it wouldnt power on. I checked the switches, the ground pins on the header, checked for bad connections etc etc. Eventually I noticed if it sat for awhile it would boot. To make a really long story short, it seems that when I turn the power off at night (kill powerstrip) the machine will not boot for more than 60 mins to less than 80 min. If I shut down the computer and turn it back on it boots right back up everytime. If I turn off the I/O switch on the supply for 5 min and back on it boots ok aswell. If I unplug the power cord from the supply for 5 mins then plug it back in, it boots ok aswell.
Furthermore there is a LED on the board and it takes almost 3 seconds to go out after the power is disconnected. That tells me the caps on the board are good, and I have checked the ripple on the power supply, and it is pretty low, so I dont suspect filter caps, but I am leaning toward a bad supply. It is an early style P4 with the 6 pin aux connector, so if its the problem I will probably repair it as I'm sure they are PNLA, or whoever has any is just waiting for that yokel that MUST have one so they can charge 200 bucks
Anyway, I would like some input from some other guys who are in the know, what ideas you may have. Meanwhile I'm gonna poke around an see if I can help some peeps ;)
Here are the specs:
Lead Power (generic) 500w ATX supply
Intel (MSI) D850GB
4 stick rambus
Syba ATA controller
1 parallel drive
1 serial drive
Just so you know what my technical experience is. I have 25+ yrs computer exp, degree in electronics, worked tech support on site, and on the phone, and various other mechanical, and electromechanical skills. phew! nuff of that.