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Help with troublesome motherboard
Hello,
I have an old PC with a motherboard that doesn't have any documentation nearby. It used to work great, but today I found it in a forzen state (blank screen) that and didn't want to boot up again for a diffirence. I supposed the AT PSU was to blame, since some connector pins were visibly charred. However when I replaced the PSU and all suspicious components, the computer still refuses to boot. It seems the network card, which is connected to the board with a special cable (WOL I think) powers up and begins passing around packets, the harddrives spin up and employ their heads, but the CPU fan is perfectly still and there is nothing happening, no beep, no keyboard start, blank screen, etc, nor is the CPU getting any less cold. Since the motherboard also has an ATX plug, I am going to try with an ATX PSU and see what happens, the only problem is I don't know which pins on the motherboard are supposed to be bridged to turn it on (ATX power switch plugs). Here is what I got at the moment: POWER LED PC SPEAKER | | | | | | o o o o o o o o o ISA SLOT HERE o o o o o o o o | | | | | | RESET SW | | HDD LED TURBO LED I suppose I'd be able to get the remaining pin meanings if I knew what motherboard brand and model this is, but I do not. Can you help me there? As said the motherboard has AT and ATX power plug options; it has two onboard IDE controllers, floppy, etc; it has 3 PCI slots, 2 ISA slots, AGP (x2 max I think), 2 SDRAM slots and a CPU slot (not socket). It has an apparently non-standard USB connector (pinset), two COM port connectors, LPT port connector, PS/2 mouse connector and large DIN keyboard plug socket. The CPU in it is a 300 MHz Penitum II and the chipset has a green raidator with "Soyo" on it, the second chip of the chipset also has a label saying "Soyo". Hope I can fix this bugger. Thanks. =) -- Model: INFJ Primary function: Coprocessor Secondary function: Cluster commander Yes I'm a therian: http://www.wikitherian.org Creationism & Darwin: "The bible says humans were supposed to use animals to do work for them and I like to work so I must be an animal!" |
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Jure Sah wrote:
[snippity-snip] It used to work great, but today I found it in a forzen state (blank screen) that and didn't want to boot up again for a diffirence. I supposed the AT PSU was to blame, since some connector pins were visibly charred. However when I replaced the PSU and all suspicious components, the computer still refuses to boot. It seems the network card, which is connected to the board with a special cable (WOL I think) powers up and begins passing around packets, the harddrives spin up and employ their heads, but the CPU fan is perfectly still and there is nothing happening, no beep, no keyboard start, blank screen, etc, nor is the CPU getting any less cold. With apologies to DeForest Kelley, "It's dead, Jim." If something died on the motherboard in such a way that it shorted out the PSU and charred some of the pins, it's a dead certainty that other portions of the board are also fried. (You might find it instructive to remove the board and look for damaged or fried traces on the underside.) -- Don Piven -- Evanston IL| The problem with thinking that you can do Spammers should reply to| everything is that people keep trying to "; | prove you right. humans can send to "don"| |
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