terminator 2 sound issue

mr.fixit

Well-known member
Joined
Aug 7, 2011
Messages
1,009
Reaction score
160
Location
arnold, Missouri
so, my original sound board was irreparable (too much corrosion), bought a untested one from a nba jam arcade off ebay for 30.00, it came in the mail, it had two parts missing, a cap(replaced) and the clock crystal(replaced). Then i installed my t2 sound roms, fired it up and it worked! then as i played the volume got louder and louder and louder over time, with the volume knob all the way down the game will blow the speakers, and it will still crank up further!, with the pot unpluged it is still super loud, so i added a 47k ohm resistor across pins 2 and 4 (the pot pins ) and no change.... ???? what do?
 
you're probably missing another resistor somewhere to the amplifier then. whatever's in that potentiometer circuit, it's not working. I'm not totally familiar with those sound boards like that to really say.

it's the ADPCM board that Mortal Kombat, NBA Jam, and Total Carnage also use.
 
Back
Top Bottom