I got around to completing this repair today.
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Yaesu sent me a Q9000795 rotary encoder (Alps, appears to be identical to the original one), they also sent me a new knob RA026960B. Total cost including tax and delivery was GBP11.66.
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After removing the front panel , I was able to cut all the tabs off the old encoder, desolder the legs and clean the board. Very delicate operation, I noticed I scratched the coating off the ground track on top of the PCB in a couple of places, also the track below it but they checked OK for continuity.?
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Fitted the new Alps encoder, cleaned the board and re-assembled. The radio has been sat on 40 meters monitoring some CW QSOs for the last couple of hours.
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73
Nick
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