The Tandy Z-PDA, AST GriDPad 2390, and Casio Z-7000 were *all* mfg by Casio.
The are the same unit with different silk-screening on the outside. Don't
let anyone tell you that they aren't the same!
Either Casio or Tandy could repair the unit. "Would they" is an entirely
different matter. I bet Casio will claim that they can't repair it. Radio
Shack should do it -- especially since I see them claiming to be able to
repair any brand electronic devices.
Robert Bottomley
Internet: Robert.A.Bottomley.Jr@cdc.com or RBottomley@aol.com