I sent mine in for an intermittent like that, only on 80 meters.
Probably on oscillator board, which is under top cover, left front, UNDER the
board shield.
You need to dress the cables and insulate with a towel so you can operate rig
while upper boards are folded off to the side.
Determine where the 10 meter section is, and push in that area. If that
doesn't work, heat with hair dryer to see if it comes back.
If you get results, then kill power and solder all connections in area of fault.
If no results, I would still solder in 10 meter area, sucking away old aged
loooking solder. Also look for corroded solder joints. I just got my Paragon
II going with an intermittent on VCO board for all bands under 7 mHz due to
corroded joints
It can be a bad relay in passband relays, I believe, as the 10 and 12 meter
bands use different relay contacts.(pretty sure)
That one is harder to get to.
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