ORIGINAL: 417mack
I have installed an ar700 rx in my Kyosho Spitfire, everything works great untill I start the Saito 56, the thtottel servo will move on it's own up to about 3/4 throttle if I advance to full then back to idle it will idle but then begins to advance again. I have a standard servo on the throttel I would think this would be fine. All the other servos seem fine. The rx is in foam and strapped to the fuse the second antenna is mounted perpindicular to it solid to the bulkhead should I try moving it rapping it in foam or put my old 72 rx back in.
Try another servo. If it does the same check connections very carefully. Even change the extensions if needed. I saw one do this not long ago and it was the servo extension connection. Also, after trying a second servo if the problem persists, switch channels on the receiver and test the servo in another channel. Check one thing at a time reducing the failure points until you isolate the problem.