Toshiba PB6643 - shakes

[moose]

I have a Toshiba PB6643 hooked up to a Dance Maniax machine and it's got the shakes. Any vibrations at all (including those caused by the machine's own sound system) cause the display on the screen to wobble. It's not a constant thing and goes away depending on if we whack it the 'right' way or move the cab to a different spot on the floor. What can I do to fix this?
TIA

[grantspain]

you  probably have a bad solder joint on the monitor chassis somewhere or a bad connector

[moose]

Any chance you could be any more specific?

[SirPeale]

Any chance you could be any more specific?

That's already very specific.  Take out the chassis and look for bad solder joints.

[ChadTower]

Also check for potential magnetic interference.  If sound is doing it you could be looking at the speakers causing it magnetically rather than through vibrations.