Originally Posted by Rajah235
Hi & welcome to the 9116 association.
It sounds as though you may need to check all the solder joints on the main PCB & the small daughter/Rx boards.
The craftsmanship leaves a
lot to be desired.
Just be careful when you do this, as too much heat for too long & you'll lift the copper tracks off the board/s.
I take it that it binds O.K.?
Let us know how it goes.
ops..I think the I explained the problem a little bit wrong I realized that after you said "bind".. problem is : it binds when the tx is close to heli but if when it is away from the tx even 1 meter the connection is lost, the red light on PCB flashes , tries to bind and if I take the heli close to tx then it binds again. I checked the soldering on PCB.resolder them. still same problem. thank you