Alessio,

I honestly dont think that different brand of servos could cause this. A Lot of my jets have several brnads, not only JR for peace of mind. I like to use Volz, Multiplex, Airtronics, some Futaba and mainly JR servos. This problem so far has burned 2 Futaba's and 2 JR's.

Before I change the RX I would like to know if there's anything I could do, how do I check the voltage from one channel ?