First post, by Cyberdyne
- Rank
- Oldbie
Near the battery, there are 3 red glass diodes, if you remove the middle diode, you can replace the old bad battery, with a lithium cell socket, and put a new battery in, and you have a working system.
By the way, most 486 128kb bios chips can be replaced, with a newer 256kb bios chip, and can be UNIFLASHed.
You only have to do one thing:
COPY /B BIOS128.BIN + BIOS128.BIN BIOS256.BIN
Then it just programs 2 copyes on the chip. You can even program it on a 486, it only tells you, that half on the chip did not get flashed.
I hot replaced my SOYO 486 motherboard bios chip, flashed it with newest PVI-486SP3 bios, and put the chip on my PVI, because my PVI was with a EPROM, and can not be flashed. But now it has a 256kb BIOS chip, from a dead Socket350 motherboard, and it works.