PAC-MAN noise problem

[BUCKETHEAD]

I love my PAC-MAN dearly!

But the noise it makes drives me up the wall !

It sounds like a cross between a drum beating with some crackling added in.

or wind blowing in a microphone.

You can turn the volume down on the board.  But you still hear it.

The only way to get rid of it. Is to disconnect the speaker.

Everything is is fine with game play.


Here is some pictures of the insides.

Is there something i need to check ?

Thanks in advance!