Fail to boot old PC - no error beeps, no display out.

[Shanduur]

Hi!

My problem is with Intel Celeron 333MHz, and mobo is 650B-ATX with Award BIOS chip - no display out and no beep codes.

I had some issues with beep codes on the device, which I have finally resolved - RAM was not able to run with 66MHz FSB, so I changed FSB to 100MHz and set the CPU frequency from stock 333MHz on 66MHz FSB to 350MHz. I tested the power supply ( Chieftec Arena GPA-350S8 (350W) ) with another motherboard, and it works just fine. I also tested the GPU ( NVidia MX2 400 ) on other system, and it works absolutely fine. I tried refitting every component, cleaning ports with compressed air, and nothing helps.

I have the following jumpers set:
- SW1: ON, OFF, OFF, ON;
- JM1 and JM2 are open, for 100MHz FSB;
- JP1 is set for 5V;
- JB1 is set in normal position;
- JP2 is set in enabled position;
- JS1 is set to Above 1M (also tested with default, no change);
- JK1 is set to KB Wake Up (default);

Do any of you have idea what should I check next? I don't have spare CPU or RAM stick for now, but as there no error codes for RAM, it shouldn't be the issue, right?

I'm attaching manual for this motherboard, as it is extremely hard to find.

 

[Caring1]

With a board that old I would check for failed capacitors.
It's been ages since I tinkered with such an old board, hopefully some of the others that still have retro systems can help.

 

[Robert B]

After a discussion with Shanduur I attach the BIOS for this motheboard.

The files are with .bin and .hex extensions.

Maybe someone will need the BIOS in the future.