Having issues. The engine will not respond to any commands. You put it on the tract power up the track and it starts up to full rpms and won’t move just wide open. I have tried to reprogram it and when in program mode it does the same thing. Rpms all the way up. I feel like the RCMC board cooked. I have gone through the wiring completely no pinches no rubs or shorts. This is the same exact thing that happened to my UP U-30. 6-38420 engine. Both of them had been running great for months. The UP died about 2 months ago. Just got the parts and putting it back together now. Can’t really afford nor is it much dun to have by new boards every other month. Any idea what might cause this not one but now 2 engines. Voltage runs 18 17.8 at the farthest point @40’.