I have just installed a Chinese 2Din Android head unit but it frequently reboots with the Antenna plugged in, strangely rock solid if I don't plug the antenna in but of course I don't then have radio.
I have got the antenna powered from the stereo and am using a Fakra adapter which is also powered. When I first installed I used a none powered Fakra adapter and hadn't powered the antenna from the stereo and it kept rebooting constantly. I then installed the powered Fakra adapter and it rebooted less frequently but reception was rubbish. I then also powered the antenna using the head unit to original antenna power cable from the oem harness and the reception got a lot better but the unit still reboots more often than not a few mins after the initial startup and once it's rebooted itself then I have no sound or even hiss on the radio until I cold boot the unit.
I don't understand why or how the antenna could cause the unit to reboot as I've checked and it's not like I'm getting any voltage backfeed down the antenna cable to the head unit.
I might go down the route of replacing the current antenna to see if that fixes the issue but before I spend more time and money does anyone have any idea what could be causing this?