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    FMH-3 Microphone will not PTT

    Member ✭✭
    in SmartSDR for Maestro and M models

    The FHM-3 microphone stopped working during a QSO. There was no PTT closure.

    I opened up the mic and found the PTT microswitch is stuck in the Open condition and will not Close. No click to be heard. I removed the PCB and Ohmed out the three pins on the back of the board (see photo) and there is never a switch closure.

    The microswitch is broken. Is there a source for a replacement microswitch? The switch is not marked. A maker's mark or a seller on-line?

    Thank you.

    I tried to post a photo (.jpg) and this site will not allow it.

    Comments

    • Member ✭✭✭✭

      hi Rob(?)… when this happened to me, I contacted the sales department @ Flex via email, and they were able to sell me another FHM-3 at very reasonable cost.

    • Member ✭✭

      Mine broke after about 10 minutes of use.

      I replaced the switch with a TE Connectivity SAJ405XHL0N30SDTLRQ

      Digikey has stock.

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