Neo Geo MVS Squeals like a Pig?

tofudrifter81

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Donor 2012
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Well, Just got my Neo Geo MVS 4-25 Ver. 2 cabinet working on a 2 slot board. My 4 slot board has a back up rom error. So at least I can play it and thats the most important thing RIGHT! But this little board that switches and illuminates the luminecent paper for the marque is squealing like a stuck pig. I originally thought my PCB's audio section needed re-capped. but I kept hearing it even when the sound was turned all the way down. SO what part needs to be replaced or checked on this board for its loud noise. And none of the marque spots light up either.

thanks for your help in advance.
Jason W.
 

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Replace the electroluminescent panels themselves. They are bad and the inverter is overloaded trying to light them.

Common problem.

If you decide to tear 'em out to put in a flourescent light bulb, let me know. I'd like to get the wiring and all the pieces for a 2 slot cab EL marquee light setup to try to mod for LEDs.
 
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