Help me reviving my 486...

[Jerre]

Hey all,

 

I've got an issue. I had a working motherboard, after mothballing it, i installed some components, put power to it, and low and behold: it worked.

 

After a cleanup, involving a bios chip removal because corrosion, it failed on me. Nothing goes. Is there anybody (Belgium) willing to take a look at it?

 

My guess:

1) the socket for the bios chip is missing connections: the corrosion snapped some of them off.

2) the CMOS battery (VARTA NiCd) is leaking, I guess no paths are broken (visual inspection) but i do think it needs a new cmos battery (button battery mod).

 

I got a rudimentary soldering iron and no expertise/practise in fine soldering work needed for this.

 

I got all the parts neccesary to revive this PC: PSU, intel overdrive DX4-100 (2x) or a 486/DX2-66. hdd, floppy drive (i guess so)

 

Ati mach64 graphics, or other VESA graphics/pci graphics

 

As a bonus: i got a socket 7 motherboard with a 233 mhz amd k6 cpu, also dead. Are you the handy guy, willing to help me out, than do contact me.

[Guest Wimpzilla]

I will maybe not take a train to Belgium.

 

Still some high res pictures would be welcomed for basic troubleshooting.

 

Have you an external programmer, can you read and push back the bios into the chip?

Edited October 11, 2017 by Wimpzilla

[Jerre]

I will maybe not take a train to Belgium.

 

Still some high res pictures would be welcomed for basic troubleshooting.

 

Have you an external programmer, can you read and push back the bios into the chip?

 

I'll see into this...

[Antinomy]

Post some photos of the board. Did you put the BIOS chip the right way? There is a small crack both on chip and socket marking the way to insert them.

Check out here: Badflash Bad Flash