----- Original Message -----
From: "glenn P"
If he had "converted" it, it would be easy to work out. If it didn't have
a 220Vtransformer, he'd have to install one. The solder joints would be a
giveaway.

Not likely. For many years most voltage conversion is done by
changing taps on the line transformer. Either by a switch or
on older gear, solder connections. No tranformer change.

Real cheap electronics might have a 220 v tranformer, but
a tape deck would probably have a 110/220 v transformer.

lee h