Galaga sound issue

galaga123

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This is my first time posting here so I hope I have this in the correct location. I have a galaga with no sound. It used to have sound but now it does not. It is not the pcb (moved it to another game and the sound worked) and it is not the speaker. The game plays great except for the sound issue. Is there anything else I can check or is there a fuse that might control this? Could it be a fuse on the power supply? All help is appreciated!

Thank you!
 
This is my first time posting here so I hope I have this in the correct location. I have a galaga with no sound. It used to have sound but now it does not. It is not the pcb (moved it to another game and the sound worked) and it is not the speaker. The game plays great except for the sound issue. Is there anything else I can check or is there a fuse that might control this? Could it be a fuse on the power supply? All help is appreciated!

Thank you!

How do you know it is not the speaker? Did you plug another board in an it worked? Did you connect a sound source to the speaker? Maybe there is an open in the harness.
 
How do you know it is not the speaker? Did you plug another board in an it worked? Did you connect a sound source to the speaker? Maybe there is an open in the harness.


I tested the old speaker on another machine and it worked.
 
I tested the old speaker on another machine and it worked.

OK sounds to me like there is an open in the wire from the board to the speaker. First thing to check is use a continuity tester and test from the board connector to the speaker connector. The pins on the connector are:

SPEAKER + pin B
SPEAKER - pin 2

This way you can be sure it is the wiring before you start messing with it.
 
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