Jim,

Yes, I had a similar problem with one of my TS-830s rigs but to a lesser
degree. The problem would occur like yours, then the display would come on,
frequency would be irratic for another 20 minutes or so. This is the classic
Kenwood grounding problem cited in the QST review of the TS-830S and also
described by Rich Measures (AF6K?). Solution is to tighten all screws holding
PC boards to the frame and attaching a ground wire to the AF/AVR board (Rich
Measures website has step by step instructions). Not sure if this is related
to your problem or not.

73s,

Evan