Heliguy Forum - RC heli forum

I am flying a 'stock' belt with Tower Pro servos and use a Futaba T7CP TX. I have been flying this combo for over a year. Half way through my last flight I was catching up on some basics when suddenly I realised that I was not in full control. I managed to land and found that the LHS/Rear servo was not responding. Without checking the other servos, I ordered a replacement.
The replacement still did not work. I swapped other servos around and determined that channel 5 seemed to be not responding.
I odered a replacement RX unit (esky i'm afraid!!) but on fitting it, I still have the same problem:
New RX, new servo (even an existing known operational one) - still no response from ch 5.
Any ideas on what the problem may be?? Could it be a TX fault? How would I check a TX fault?
Does the Futaba suffer from 'memory loss' like me!!

Thanks for any help guys.

Ian.
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E-Sky CP-2
E-Sky Belt-CP