So I recently got a punch mania that has a RTC error and one of the motors is burned out.
From looking online, it looks like I'll need to replace
the M48T58Y-70PC1 chip (socket it upon replacement).
I also read that I can hold the test button down as the system boots up and it will write to...
So I installed a biosmasta and replaced my battery, and faulty backup ram chips on my m1vb.
Things were working great for a bout a week or so.
Now, I get this error!
UGH!
Anybody know what this could be?
I have a MV1B that had backup ram errors.
Replaced the backup ram, and battery and the thing is working fine.
EXCEPT...
The DIP switches don't seem to work. I cant enter test mode, and dip-7 (free play) is set to ON, even if I turn it off.
I checked with a multimeter - switching them does...
It has the stock bios.
I have cleaned, and re-cleaned, and re-cleaned with a contact-cleaner spray and inserting the cart. I really don't think its a dirty slot. The board is pretty clean now too.
One thing that is weird is that it will sometimes boot the newer games, but some of the...
MV1C - ONE SLOT:
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This board one resets with certain games; others - works fine.
I see this with my 161-1 ; and my only other MVS cart (Metal Slug X)
Metal Slug X - resets upon booting to title screen.
Many of the old games on the 161-1 work fine...
Backup RAM error 5555 B255 was what I started with, with a dead battery, and a little corrosion on the terminals.
I replaced that battery, and now I get, "WRITE 0000 READ 0055"
I was told to look at channelmaniacs posts, and look to the connections between rams and the CPU in resolving this...