Arcade Collecting > Miscellaneous Arcade Talk

NEO GEO MVS Sound Issues

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tommy:
my prob was the sound was working but sounded low even at a high volume  i would try attaching   your negetive to your ground not to the speaker but like i said i dont remember what i did to fix that prob it was a while ago

tommy:
all jamma harneses are common but that doesnt mean all the pins are in place to contact your pcb

raventy:
hhmm well all the lines are hooked up. Its odd cuz when teh MK board is in the PSU makes NO sound and everything works fine.. when the MVS board is in it makes the sound... when NO BOARD is in and teh jamma ISNT connected to ANYTHING it makes the sound! Anyone have any idea whats up with THAT???

Goz:
I'd had a similar issue with an MVS board in the past. Have you tried it with multiple MVS carts?

What it turned out to be in my case was oxidation on the contacts for the JAMMA edge connector. Try giving the JAMMA edge connector on your MVS1 a once over with a eraser like the ones our kids use in school and then try again.

This problem can also occur at the MVS cart level. This is why I asked initially if it happens with multiple carts. This is why alot of people in the Neo Geo world use "Shock Boxes" for storing the MVS carts.

Hope this helps,

-Goz

Brad:
I agree with the last post. I was getting both sound AND video issueson my MVS cab. Cleaned the cart and board pins and it fixed it no problem.

Brad

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