Most likely a blown fuse. Are you sure? :) I've done a test a short while ago. The PSU is power on and the LED lights. When I get a bit pressure on the BIOS chip and press the lid switch the CD drive is run constantly. When I loose the pressure a bit it's get slower or stop spinning. The sound is c...

How did your BIOS become corrupted? It's mask ROM. It shouldn't ever become corrupted. With that said, you can't flash it. You need to replace it or solder up a new chip with the same addressing, data bits, voltage and size (512 KB). I think it corrupted after a while by the bad soldered Mod-Chip a...

Hi there! I want to flash the corrupted BIOS of my PS1 (SCPH-9002). I found this thread over Google but there is no info about what hardware @Xrider used for flashing. At first I ordered a 32-Pin Test Clip from Ponoma to avoid to solder many wires to the chip like Xrider. Now my question is: What do...