MVS 2 slot repair

TMOSteel

,
20 Year Member
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Nov 28, 2000
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Looking for MVS 2 slot repair recommendations - went to boot my MVS Gold cab today to test a cart only to be greeted with the dreaded "green screen." I cleaned around the battery but did not see anything jumping out at me as far as corrosion goes.

If anyone repairs 2 slots or can recommend someone who does quality work I would appreciate it. I'd like to get my MVS back up and running.

 

Neo Alec

Orochi Spam Riot
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That looks like the beginning of a normal self test. What does it do without a cart inserted?
 

TMOSteel

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That looks like the beginning of a normal self test. What does it do without a cart inserted?
Problem is, that's all it does, over and over. I forget what happened without a cart, I'll have to test it again.
 

BIG BEAR

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And you have dip switch 8 set to off,correct?
I forgot to ask you that.
BB
 

matman

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Sep 2, 2019
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Am somewhat still learning here but that seems to line up with symptoms of a calendar error.. which could be a bad ic or crystal. But I’m just referencing channelmaniacs repair logs.
 

TMOSteel

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20 Year Member
Joined
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And you have dip switch 8 set to off,correct?
I forgot to ask you that.
BB
Good question, no idea to be honest. I've never messed with the DIP settings on this MVS, I purchased this years ago from a former arcade guy from his collection. I had to look up what that DIP is:

Switch 8: Freeze - pauses the game (done by software in a system ROM call)

I can't see that getting enabled, I literally played this years ago and just powered it down. I haven't messed with it since getting an Omega but as I've now gotten into the mini cabs (Arcade1Up, MVSX, iiRcade) I wanted to assess what I need to either restore this cab or customize it (keeping it a dedicated 2 slot of course).

Its time this cab moves from the garage into my house.

I'll check before I pull the board to send it off to you, thanks again for responding to my PM.
 

TMOSteel

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20 Year Member
Joined
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Pulled the board, all DIPs are off.

Neo Alec the board does the exact same thing with no cart inserted.
 

BIG BEAR

SHOCKbox Developer,
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Dec 14, 2001
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Did you figure this out?
The original battery took an acid sh8t on it's neighbors nearby.. all over the diodes,resistors,transistors and a few chips including a little bit of the ZMC2 . I'm working on it now. and also discovering several tracks have been broken/damaged relative to the HC32 chip ,1s1588 diode to the 47 ohm capacitor......etc
BB
 
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