MVS-MV1B Click of Death

Hello,

Since a few weeks I have a click of Death on my MVS MV1B (with or without a game cartridge inserted) - around 4 click per second.

Here's a photo:


I have tried to enable all Dip Switch but the problem remains.

A few days ago, I have installed a Neo Bios Masta with a Neo DiagBios and I still have the exact same Click of Death :/ (I have checked the traces between each pin of the eprom on the Bios Masta and each pin of the original bios and I don't see any problem)

Is this possible to still have a Click of Death with a Neo Diag Bios installed ?

In the most simple terms, the click of death means something is crashing the 68000 CPU during the power-on self test. The 68000, BIOS and Work/Backup RAM chips can all be involved in a main CPU crash. Make sure all the traces are good between those chips. If that isn't the issue, it's possible for a bad RAM chip to crash the CPU.