Hi Everyone, I've got a custom built quadcopter based on s500 frame with Naza v2 as a MC. Everything used to work fine, until a crash I had a few days ago. I had to replace a few broken parts (e.g. props, arms, etc) and replaced a squashed LiPo into a new one (4S, I used to fly on it). Before the final wiring, I've calibrated ESCs. Then I connected my Naza v2 and after connecting to my PC, I tried to run a motor tests. But I couldn't. Below I listed a few weird behaviors I observed: - In Atti mode I can easily arm motors and they slowly spin on idle. But after a couple of seconds, once everything warms up, I'm not able to arm them again. Please see the video I link to. - On PMU module, there is a LED, which used to be solid green before. Now it blinks all the time. - In the Naza Assistant software I can see "MC OUTPUT: OFF" message. When I try to run motor tests, nothing happens. But Naza connects correctly - I can see RC stick movements, etc. Here is my video: What could cause the issues above? What should I check? Thank you in advance for any help.