I'm not sure if this is hardware or software issue, but after installing frsky dht telemetry mod and flashing to opentx, THR CUT switch is stuck to position 1 (checked in RADIO SETUP/SWITCHES menu).
Here are settings I used for flashing:
[HELP] turnigy 9x thr cut switch
Re: [HELP] turnigy 9x thr cut switch
If only the THR switch is affected then it's a wiring problem. You probably have a broken or wrong connection.