Have you checked to make sure your bios battery isn't dead. I've had many boards play dead and not post or just act really weird with a low/dead/missing bios battery.

Yes, Bios battery has 3V. It is ok!

Anyone else?

Are you using the CPU you had with the board or did you change it? Later Socket 370 Pentium 3s and celerons are "FC-PGA", and one of the differences is that FC-PGA CPUs have a reset pin where PPGA CPUs have a "reserved" pin, and without an interposer or electrical modifications, an FC-PGA CPU will not boot in a PPGA board.

On the other hand, the board might be toast.

If the reset is stuck, at least in my experience it meant the CPU I used was not compatible, even if the manual said it supports it.

For example, I have a jumper-free Tualatin board that does not work with any type of FC-PGA2 Celeron, or 100mhz bus FC-PGA P3 at all. The reset light will be stuck on the analyzer, and it will only work if I use a 133mhz bus FC-PGA or FC-PGA2 P3 cpu.

https://theretroweb.com/motherboards/s/qdi-p6 … -10f-v1.0#chips

Looks like all but tualatin should work.

I'd give it a thorough wash and dry without battery.
Soap, water, toothbrush. About 4hrs in full sun or 4 days inside.

But yes, the bios is on the isa bus. No clock =no bios.

https://elektrotanya.com/jetway_j-694as_rev_0 … f/download.html
Even with a similar schematic it is better than no schematic at all.

Thank you for your responsies! Ihave check this motherboard with multiple CPU's (not tualatin) and without BIOS chip with no result. Reset stays stuck!!!!

So, the issue for the system clock is maybe on Southbridge? Because all other clocks seems to work fine...

keeper5511 wrote on 2025-06-21, 13:24:

So, the issue for the system clock is maybe on Southbridge? Because all other clocks seems to work fine...

The clock generator IC distributes the clock signal to all the components. I would look for any loose pins, unsoldered or broken series resistors.
And the most unpleasant thing is from the RESET and Power button via the "ASPI controller and power sequence monitor", which is assembled on anything. Starting from small BJT transistors and ending with 74 logic - сheck the signal transmission

No. I'm 99% sure from my memory of the bx pii4x and 686a/b equivalent that it was generated by the SB from pci/x.

Iirc the 686, which I believe was pin compatible, it had more dividers and possibly the option of an external crystal.

Look up via 686a datasheet.

Look for power to the SB. It's possible it's not getting enable.