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My Yaesu FT-840 tuning knob turns, but the frequency does not change can you help?

It changes with the microphone buttons and on the radio

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Question edited for correct spelling of Yaesu and correct forming of model number.

There is a service manual here, but you would be better to take to a service centre unless you are very skilled with electronics. It has a Lithium backup battery, and I think I would change that at the outset.

https://www.radioamatore.info/attachments/195_FT840_serv.pdf

https://www.google.com/search?q=yaesu+ft+840+service+manual

..

Posted on Sep 07, 2021

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