Originally Posted by Daedalus66
There is no such issue with the DX7. It was purely a matter of long reboot time for the receiver if it lost power.
A clarification. True, there was no issue with the early DX7 transmitter. The problem was with the early receivers. Yes, the receivers would have long boot times when you applied power to them. They also take a long time to reboot with their power being interrupted. But they would also go into a full length reboot if the input voltage dropped to I think it was 3.6V or lower This could happen in the air with a partially discharged pack and heavily exercised servos, especially if they were digitals. Hence the need for 5 cell packs and/or the capacitor which plugged into one of the servo connectors to avoid that "brown-out" situation.