Hello guys,i have a problem with my throttle channel,it used work fine,but  now its not working at all!,when i connected it to my kk2.1.5,it shows my throttle channel idle.What should i do?,any suggestions?
Iam using a 6ch mode2 flysky tx .

There may be multiple issues....
1. check wires at RX end
2. connect throttle to some other channel at RX end ( this will isolate if issue is at rx or tx)
3. in case its on tx side .... check the tx setting ( hopefully you must have already done it)
4. open tx and see for any loose wires

regds
Saurabh

Thanks for your suggestion,i checked everything,connections are fine. Actually it was my switch B on my tx which is making it stop working.When i googled about it,i found out it has something to do with throttle cut off?,even iam not sure.So why is this happening,and what happens if i do throttle cut off in mid air?,will my quad be stable in air?

Throttle cut is for mainly for engine model to shut the engine off .....quad will fall if I cut in mid air.

But if you instantly toggle back it should fly again.

Thanks alot!