All ok!
Burnt out immediately when powered up by my autopilots 11.3volts with a big chunk of heat sink attached. I use 3 of these particularly 1.2g Video Tx's and they are excellent value for money when they work properly. I've been out past 50kms and still had clear video feed! Problem is, there is little quality control and sometimes you can get a dud. Thanks to Aliexpress I received a 73% refund.