I have a multimeter I was doing a test on one chip and I was reading about 1.5 vdc on all legs except for 2 one on one side and one on the other had no voltage.

I have the schematics for this game but the sound board one is blurred and can't read it well where is the sound chip location any identifying marks on it and what test should I do to it?

thanks for the reply. I just fiddled around with it a bit more what i did was disconnect the sound board and i got picture still rolling so i adjusted the h and v sync and got it working fine but for some reason when i connect the sound board back up it stops the game from starting up. i get a black screen with the flashing every few seconds again. any ideas? is there a way to test sound board?

hello everyone. I am kind of new to the arcade collecting and repairing and i have a question about an arcade i picked up for free. it is 10 yard fight in a defender cab. now before i did anything i checked online for an irem wiring pinout and found a few but i am not to certain if it is right. If any one has a irem pinout for this game i would really appreciate it. what i have done is eliminated all wiring except monitor hook up and the 12v, +5v, ground and speaker connection. during a few test the monitor will power up without board connected. if i connect the board the monitor has a little flicker like the game is trying to load but flickers every few seconds. Any help is much appreciated. Thanks.

David