[Kenwood] TH 225 Goes to Xmit by Itself! What?

[wb6orz]

      I know it sounds strange, but every once in a while this HT starts
locking up in Xmit. Not great for my repeater friendships, or my  batteries.
The PTT doesn't seem to be stuck on. If I power down and then on again after
5 seconds, she's back to receive.
    Hunches? Fixes?
    Thanks!
    (((((73)))))
    Les
    ---===WB6ORZ===---