I installed a new DH8 telemetry module into a new Turnixy 9X following rcmodelreviews youtube tutorial which shows installation of the non-telemetry module. AFAICT the differences are marginal; you just need to locate the three-way switch somewhere and the soldering is the same.
The unit powers up and I was able to bind one of my D8RSP receivers, however in normal mode the LED flashes green/red *very* rapidly (far more frequently than in bind mode). The RX does hook up (red light on RX stays solid) and some input is possible, however for the most part the servos jitter wildly and begin to overheat.
It seems that the TX is pulsing output signals. I tested the three way switch (for 1way, 2way, firmware) but its ok - and then tried removing its harness completely, which leaves the module in 2way mode, but so far nothing alters this malfunction. I'm certain the bind switch is not sticking and has room to move freely as it functions to put the module into bind mode when used.
You can see a short video of the phenomenon here:
http://youtu.be/RlbrxkwpDQI
I took lots of care with my soldering and handling but it looks like this is a dud module that I'll need to return. However it is the first time I've tried this module install, so maybe I'm missing something obvious. Any feedback much appreciated.