RE: Walkera 22E Lets Talk
I looked at that part on mine and it looks like a crystal but I don't think it is. I think it is an inductor of some kind. Mine has chinese writing on it and I don't know how to read chinese. I would even know how to go about cross referencing it. Acebusa, you can troubleshoot it by opening up the RX and unplug all but the tail motor and the battery. Try to cause the fault by gently pushing or tweaking different parts of the circuit board to narrow down the location. Then look at it with a jewelers loupe or high power magnifier in that spot and look for hairline fractures in solder connections. Also, well placed freeze spray could help locate the problem area. A lot of intermittant problems are caused by poor solder connections and judging by the workmanship on mine I would suspect it. Also look for cracked chip capacitors and resistors and look carefully at each leg on the larger IC's