Hey Johnny,

What is the servo type that is melting?

There really is no way just one channel on a receiver can do this. It is a main power bus across the board, so what ever voltage your retract servo is seeing, it is the same as what all the other servos are seeing.

Is this a mechanical retract system or pneumatic system? Being mechanical there could be some serious binding issues, of course you know that.

If it is pneumatic, I would guess you are using one of the regular micros and it might be binding. Either weay my guess is something in the linkage is the problem causing the servo to draw too much current.

Also one other question, where is the servo located? I am guessing it is in one of your jets. Is it possible it might be in an area of the fuselage next to a bypass or tailpipe that might have a small pin hole in it and hence hot exhaust gases are hitting the servo case. This would be more of a possible reason as to why it just started happening.

More info and we'll figure this out.