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Originally Posted by Salmon-Run
Trying to help a neighbor's son diagnose problems with his Zagnutz wing (fried brushless motor). While checking out the ESC I connected the battery (motor disconnected) with the transmitter OFF and the two servos went crazy. Thinking it was the ESC I swapped in one of mine...same problem. Removed the ESC and powered the receiver with a 4 cell receiver pack and had the same problem. The receiver is a Hitec 6S. Everything seems to work fine with the transmitter on. I've been flying RC since 1972 and have never had this happen. Any idea what the problem might be? Thanks in advance. EDIT: Only spare receiver I have not installed is a Berg Microstamp 4. Replaced the 6S and the servos are rock solid. Wayne
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Subject has been raised many times e.g a little history.
Transmitter On First Off Last - RC Groups
Transmitter On First Off Last - RCU
and is covered in the manuals of all known brands of TX, especially when using PCM, PLL or IPD based receivers (e.g. 6S with Auto Gain which will seek the closest signal to lock onto and may not respond correctly to your TX when turned on later.) and/or ESC. Note: If computerised TX, your transmitter must be Turned On and allowed to initiate all internal programming First. After TX has completed initialisation, (Most Futaba beep), the receiver may be turned on. The Transmitter is turned off only after the receiver is turned off.
Also made clear in the
Hitec 6S Instruction Sheetl
i.e. TX On First Off Last.
More information available under sub sections:
"Glitches & Jitter in Receiver, Servo & ESC - causes and cures "
"Receiver - FAQ, guides and aids to best reception.."
e.g.
IPD (Intelligent Pulse Decoding) Receivers - FAQ .pdf file
at
Alan's Hobby, Model & RC FAQ Web Links
Regards
Alan T.