Yaesu FT-920 no transmit

I was surprised when my Yaesu FT-920 HF transceiver suddenly stopped transmitting. RX was ok, but no TX in any mode.

I began checking the backup battery and performing a master reset. This advice was given on eham.net by KB5UBI: "A full reset did not solve the problem, but a button battery replacement followed by a full reset solved the problem".

I removed all power and all cables from the transceiver. Then I removed the bottom cover. I located the backup battery and measured the voltage to 2.32 volt. Then I switched off the Backup switch (next to the yellow capacitor) and replaced the battery (CR2032). Then I swithced on the Backup switch. The voltage of the new battery when fitted was 3.13 volt.

Yaesu FT-920 backup battery.

My Yaesu FT-920 now performs normally. Replacing the backup battery and performing a master reset did the trick!

Happy new Year 2018 from OZ1BXM Lars

Homepage: oz1bxm.dk