I'm working on a Tee'd Off and I get one squelch when powering up. From there on not so good lol. There is no sound only a hum and some random useless noise. The sound board LED will stay lit until start a game then it will go off. The aux sound board has no light at the LED. I reset all roms and checked over boards for cold soldier also checked ribbon cable but did not replace yet. Any ideas? Thank you.