I continue to use my Q500+. At times it's more useful for real estate aerials than my H Plus because of a wider lens. For some reason, it stop writing to the video card, then it stopped connecting to camera. I've played around with cleaning contacts and now video is seen on ST-10 but camera unresponsive to stick controls. Hardwars monitor shows stick movement which suggests to me it's a gimbal problem. That and the 2 short beeps followed by 3 quicker sounds. Camera LED is solid green. Earlier in my testing the camera would move up and down but no video. What should I check or do next?