Thanks to CarlW and DrDark. I would post PMs to you both but I am not sure how.
I am posting this one with pictures of the back of the machine to get some help finding the Sound Board.
1011012150.jpgAt first, I thought the two knobs on this board might be sound, etc., but that didn't seem to be the case.

DSCF0001.jpga little wider shot of that same section.

DSCF0004.jpg This board is at the extreme top right and includes the power switch.

DSCF0003.jpgThis one is about the middle of the back.

DSCF0007.jpgDSCF0008.jpgLeft: the main speaker, behind the shooting tray. Right: what looks to me like an auxiliary speaker, probably a tweeter just to break eardrums!

DSCF0009.jpgDSCF0006.jpg Left: my temporary solution. Yes, that is red tape covering the speaker opening. Right, an instruction panel from the back.

I can post more pictures if needed.

Thanks for all your help.

Steve