Some people are very lucky, Don. It depends on how it lands...internal circuitry can easily be jarred loose, but, fortunately for you, it wasn't. The E-80 was never meant to be gigged with...far too heavy.
Not using a case...tsk tsk! Should have put Bill in one.

Ian
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Yamaha Tyros4, Yamaha MS-60S Powered Monitors(2), Yamaha CS-01, Yamaha TQ-5, Yamaha PSR-S775.