"So thats why it won't connect....Thanks Chris"

"I don't think the HK GCS is being developed anymore. It didn't make it into the MAVLink 1.0 era."

"thanks for the input Vernon might just order me a mux and try it on my old board (need one for a boat project )"

"So why not send them back in to diy drones as they can and will replace that mux chip. Can't be musch for that chip or just do it yourself."

"i just had a thought i wonder if you could solder bridge it and bypass the mux ?"

"No the receiver out is good, the MUX chip has no output on CH3. So I will fly the telemaster the old fashioned way until the new APM comes in the mail. lol I may fly it with the throttle direct from the receiver and the other channels from the APM…"

"don't feel to bad i burnt one up too :)"

"i meant straight to the transmitter ? "

"Yes I plugged a servo into the CH3 output and no movement. I uploaded the old servo/radio test routine without the oilpan and CH3 is dead. Just have to wait for the new APM V1.4 from Sparkfun. Maybe use the old APM for experimental add ons????"

"did you try a servo straight to the radio too make sure its not in your mixing and does it read correctly in MP tx setup? "

"Let's use a some simple testing to figure this out. The PWM outputs are DIRECT connections to the mega 2560 outputs, so it should be trivial to upload a program via Arduino and toggle that pin high and low with a simple program and monitor it…"

"I see it has been over a month since this topic was discussed. Did you discover your problem? Get a new board? I have a similar problem, I have no output on CH 3, the throttle. I did not plug anything into the ardupilot board other than the usual…"

"Hey Dexter,   Please read all instructions before asking any questions. All the answers that you seek are waiting for you on the set up page in the instruction section or in the discussion section of this site.  Thankyou."

"I guess I just want someone to say " yes you f!*ked up! " so I can justify ordering another board. I would order an APM2 but I got too much money wrapped up in my oil pan. mag, pitot breakout and xbee breakout. I know the APM2 has these…"

"The APM mission planner even shows that it is giving an output to the offending channels but I am getting nothing on the output signal pin for said channels. Even in MUX pass through mode (manual)."