If you use high performance (high torque & high speed) servos on an old AM 2 channel receiver, the BEC will cause problems because the BEC can not supply enough current to push the servos which draw more current due to high performance.

For FutabaFP-R112JE,FP-R 122JE

 

   
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1.  Cut the foil connection between transistor B1204 “C” Plate and Point A.

2. Solder A and B points together.