This is driving me mad. I've got a 2007 RX400H and I took out the tape deck and put a touchscreen Android unit in.
It was working fine until my son bought one for his car and wanted to test mine in his.
I took it out, it worked fine in his car then put it back into mine, to find there was a black screen and nothing worked.
It turns out I'd blown it up somehow,
So, I bought another one and fitted that. It all works except there was no sound.
After checking the fuse, which are a b***h to reach, I did the thing on display 3x top and bottom left to see the AMP was showing NCON.
Another few hours on google told me I must've blown the amp too so I got another one eBay only to find I still have AMP NCON and no sound !!!!
Can anyone give me a clue on where else I can look?