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http://www.falconfly.de/cgi-bin/yabb2/YaBB.pl 3dfx Section >> Tech Talk >> working computer....dies........ http://www.falconfly.de/cgi-bin/yabb2/YaBB.pl?num=1147726539 Message started by Combatman on 15.05.06 at 22:55:39

Title: working computer....dies........
Post by Combatman on 15.05.06 at 22:55:39

My working 475mhz k-6 was nicely putting along at 500mhz with my 32mb rage128 with tv out and 128mb of memory. I added a 40gb scsi drive and scsi pci card and a custom 2 fans spliced onto 1 wire. So i started it up. The fans pulsated a bit but evened out. Logged onto win98 finds the scsi card driver restart the computer. Only it never restarted. Just a nice blank screen. I previouslly tested the memory so the mem is ok. The processor was fine, it did the same thing with another one that I know works.

Any ideas???

Title: Re: working computer....dies........
Post by Eye-Q on 16.05.06 at 00:03:16

Maybe the power supply is too weak so it can't handle the additional power used by the SCSI drive, the PCI-card and the fans.
Yes, I know it started at the first time but a PC does weirdest things when the power supply is too small dimensioned.

Title: Re: working computer....dies........
Post by paulpsomiadis on 16.05.06 at 18:55:30

Too many fans = PSU overload... :P

...I know as it has happened to me before. :(

Just remove some of the fans - should boot fine again! ;)

Title: Re: working computer....dies........
Post by Combatman on 16.05.06 at 23:09:13

I took the fans out and everything else except the video card
and still no boot screen....nothing

Title: Re: working computer....dies........
Post by elfuego on 17.05.06 at 20:45:00

wrote on 16.05.06 at 23:09:13:

I took the fans out and everything else except the video card
and still no boot screen....nothing

Change the PSU, or the power input. Check the power cord. Smell the PSU - if it smells of burned rubber - it's a goner. Also, try to lower the CPU speed with jumpers. Reset the BIOS (clear CMOS).

Title: Re: working computer....dies........
Post by Combatman on 17.05.06 at 23:19:07

Im 99% sure it is the moptherboard. The dual fan was plugged into the mobo fan socket. The cpu and the fans were fighting for power and the fans won. :-[

Title: Re: working computer....dies........
Post by FalconFly on 18.05.06 at 03:23:47

Could be.

Normal Motherboard Molex connectors are able to supply a max. of maybe 2.5 to 3 Watts.

Connecting a higher rated Fan (or two 'normal' ones that add up Wattage) can destroy the power regulator cuircuit responsible for the Fan power.

(e.g. most power-hungry Fans carry Warnings on them not to connect them directly to the Motherboard)

Title: Re: working computer....dies........
Post by jandarsun8 on 18.05.06 at 04:44:09

If your using a K6 board, chances are the power supply was between 150 to maybe 250 watts. I'd dump in a 300/350 watt and see what it does.

Title: Re: working computer....dies........
Post by Combatman on 18.05.06 at 23:28:43

Was using a 200watt powersupply on the at slot. dont have an 300watt one hanging around anywhere.It has a slot for an AT power supply and an ATX power supply. I have no clue where to put a power switch on the board since atx power supplies dont have one built in. Heh... maybe ill find a motherboard at the town recycling center this saturday. Best part is the guy who works there says "IF it don't work, bring it back"