Hello everybody. Last Sunday something unpredictable and meaningless happened. I was in flight with my extra 300 104 'with primary receiver CB 200 Rex 7 Assist with gyro not activated and as secondary Rsat 2 with 2 Jeti 3100 mah batteries. All servos are 7.4 volt Savox SV 1272 SG (I think I have made 70/80 flights without problems) and suddenly the right elevator floor stops working. I managed to land without any problems and I wondered if I had the batteries a little down even though I had charged them the same morning and it was the first flight of the day. I turn off the engine and begin to check what may have happened and the elevator floor sometimes moves and sometimes doesn't move. I turn everything off to check the plugs but everything is ok the servos have no smell and everything seems ok. I go to turn on the system again and nothing turns on anymore as if everything was dead and I hadn't done anything. I decide to go home and calmly start checking. Arrived at home I assemble the model I connect the batteries I turn on the DS12 transmitter I turn on the RCswitch the green LED turns on but the model shows no signs of life, I check with the tester if the CB 200 is powered and I find 7.9 volts at the output, check the voltage of the batteries and both give me 7.9 volts, I check the voltage that reaches the receivers with the tester and is 7.9 one and 7.92 the other. The telemetry works but no servos move and I see in the telemetry VOLT RX 1 6.91 volts and VOLT RX 2 7.91 volts. Why is there a volt of difference? . After a bit of calm I begin to remove the primary RX and suddenly everything turns on the servos work, I reconnect it and nothing works anymore. I turn off everything I remove the primary RX, I make a new model nothing to do it does not connect anymore, I take the other transmitter the DC24 I make a new model but it does not work anymore, I tried to do an update with Jeti Studio but it seems dead too if the power comes in. I tried to change the port with Device Explorer but nothing is not working. I thought dead for dead I open it, I struggled a bit because it closed very well, after having opened it inside there is no smell the tracks seem ok but it doesn't work. I take another new REx7 Assist from the closet and connect it to the CB200 as the primary RX and everything seems to work, but I have many doubts why an RX stops working so suddenly? I take the TX I see that everything works and I enter the Wireless Trainer, I deactivate the secondary REX and everything works, I deactivate the primary REX and nothing new works anymore and from that moment the RSAT2 no longer connects, and powered I see the telemetry but not makes nothing work. Now is the time to ask for help because I no longer understand anything.
Thanks for your help