Every now and then, I see a flurry of post about v911 RX that refuses to reconnect or rebind to the transmitter. Often times, this occurs following a crash. The symptom is upon plugging in the battery, the RX LED immediately turns solid without blinking, or sometimes, it does a series of rapid blink and then turns solid much quicker than normal.
A number of us learn that the cylindrical crystal that is responsible for the timing of the circuit has gone bad. Replacing it usually fixes the issue. I’ve had this happen on three RX already, and solding on a new one have fixed the issue all three times. So it’s worth a shot instead of throwing the RX away.
For the repair, you need a working 16mhz crystal. You can purchase some on eBay or DigiKey. Or grab one from a non repairable, broken RX board.
The ones I got from Ebay is actually smaller than the original. Whether it’s more dedicate and prone to getting damage as a result, I can’t say yet. Time will tell.
Here’s the two side by side. The original on the left and the Ebay version on the right.
It was easy for me to solder on the new crystal from EBay. And it works like a charm. Here it is soldered to the same location on the v911 RX. It doesn’t dangle past the RX edge like the original one. Just need to glue it down to secure it in place.
I purchased 50 of them, so let me know if you need one in a pinch.