VOGONS


First post, by dosquest

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I have a Digital pc 3000 and when I plug it in it automatically powers up, pressing and holding the power button does nothing to turn it off, I cleared the cmos from the switch box on the motherboard and by removing the cmos battery, putting in a plug n play trio64 into one of the free slots does nothing, it still does not display anything, it has ram and when I hook up a 400mb clean install of ms-dos 6.22 hdd it does nothing, it my psu dead? Also I get no video from the on board trio64 sv3. Any suggestions? It's a pentium III MMX

Last edited by dosquest on 2011-10-26, 05:48. Edited 1 time in total.

Reply 1 of 9, by ratfink

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are the motherboard headers correctly attached?

the cmos may be set to automatically reboot on power failure - i think i had a board that defaulted to this

is there onboard video? again i had a board that defaulted to this and seemed to not use agp/pci unless cmos was set to it

try unplugging the psu, removing cmos and resetting it, leaving it all unplugged a few minutes.

Reply 2 of 9, by leileilol

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I've had this symptom from a killed PSU before - the half permanent power on when plugged. You would only hear the PSU running and nothing else would be running.

immediately gutted that thing out of there before i assumed the worst (kaboom)

apsosig.png
long live PCem

Reply 3 of 9, by dosquest

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@rat Yes, they seem to be correctly attached. It does not reboot, it just does not respond to the powerbutton or reset button, you have to actually unplug it to get the computer to turn off, yet when it is on I plugged in an hd with ms-dos 6.22 and when I started it up the drive made the sounds as if it was loading dos, you know reading from the disk ect.

Reply 4 of 9, by dosquest

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Okay, I unplugged the psu, and popped out the cmos battery, let it sit for 5 hours, plugged the psu and popped in the cmos battery, connected the vga and power, pushed the power button because it did not automatically come on, computer turned on, and...no video, and I set the switch box thing on te motherboard to factory settings.
Okay, I took a shot of the switch box thingy configuration sticker on the inside of the cover. 11j5f9j.jpg and the actual switch configuration I have I took a picture of. inqtkp.jpg

Reply 5 of 9, by dosquest

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@rat
Also, yes it does have on board video, but when I plug my monitor into the vga port it does not display anything off of the built in video, nor does it when I use a plug n play card (as stated in the first post.)

Reply 6 of 9, by GXL750

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Are you able to test the board with different RAM, cpu or PSU?

Also, only 60 and 66mhz options are listed on the PCB writing but you mention having a Pentium III installed in your OP. Do you think possibly you have an unsupported CPU plugged in?

Reply 7 of 9, by dosquest

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I will take a pic of the cpu, it is the cpu that was in it when I got it, when ortho got rid of it they just said that it stopped working one day. 😒

Reply 8 of 9, by GXL750

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Try removing cpu, ram, hard drive cables, anything that's made to be detachable and make sure there's no dust and then reseat everything to ensure all parts have a good connection. See if that helps.

If that doesn't work, the immediate next step for me would be to try with different cpu, ram, psu.

Reply 9 of 9, by dosquest

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The motherboard was fried, I tried multiple sets of known good ram, I tried 4 psus in it, all known to be working still nothing.