Unknown Socket 7 Motherboard, Catch 22

WRONG :-)

One of them being Compaq (or Dell :-) should raise serious suspicion on being 'drop in replacable'.

If the new board is a 'standard' board, use a standard PSU to fire it. Then you can watch the bios screen and/or run identification software.

Gerard Bok

Forgot to mention that the Compaq PSU was also nonworking. The complete story is "Bad PC PowerSupply or MotherBoard?"

I now have a new standard PSU but as previously mentioned do not know which of the front panel pins are the start ones so would like to track down the documenation for this unknown Mobo.

Am not too anxious to just start shorting the front panel pins!

Ken

Missed this mistake before posting and do not know how to edit it. " The upper

Should be The Back upper left area.......

Again would be Very Interested in any suggestions.

Thanks Ken

Can you upload somewhere a photograph of it?

-- Adrian C

Adrian C

Sure, any suggestions?

Ken

if you are talking about a compaq product this may be helpful

Ryan Weihl

Thanks for the links!!

This unknown Mobo does not seem to have the same front panel connector because it is 2 rows of 12 pins with 3 missing.

I was able to upload 2 photos to imageshack.

Major features of the Mobo are:

Ali Chipset (M1541 and M1543)

ESS Audio Drive (ES1869FC M468)

Socket 7 (CPU is AMD)

Memory is 2 DIMM slots

AGP slot

2 ISA slots

Std 2 ISA and Floppy connectors

has made in Taiwan above the Socket 7

Ken

On 11 Jun 2006 07:17:16 -0700, snipped-for-privacy@yahoo.com put finger to keyboard and composed:

With power removed, use a multimeter to determine which pins are grounds. Then with standby power present, determine which pin has

FIC ???

- Franc Zabkar

Please provide more details because what you listed could apply to many SS7 motherboards. The model number may be printed around the periphery, between the PCI or ISA sockets, or even on the bottom.

Avoid typing the same text again and again Stop wasting your time on mouse movements Open favorite web pages with a single hotkey press Record keystrokes and play them back with a single hotkey press

------------------------------

------------------------------ Save yourself from repetitive tasks

uttered with a toothy grin in sci.electronics.repair:

You can report it with full headers to:

snipped-for-privacy@google.com and

snipped-for-privacy@cnc-noc.net

Franc Zabkar

Thanks for the Excellent Tip!!! I did as you instructed, found the grounds 1st and then checked for +5V. When I found it the PC started.

Maybe I have never seen their Logo. Will check it out.

Ken

just short out the front panel pins with a screwdriver. never in 8 years of IT has this ever caused any damage for me, and the reasoning behind it is that out of the FP connections, the speaker, power led, reset switch, green led, hard disk led have no voltage across them whilst the machine is switched off. the one remaining pin pair - the power switch does have a small voltage across it, but not enough to cause a damaging current to flow back into the other pins if shorted.

The other way to power on the machine, is to use a paper clip or some other low-tech solution to short the green and black wires from the power supply to the motherboard. although this doesnt always work, but again its never caused any damage for me.