So I have just recently bought a 2003 rx8,
When I got it all of the buttons, LCD , a/c worked perfectly fine.
About two weeks in, I tried plugging in an iPhone integrater.
Almost instantly after plugging everything in, I turn the car back on to check if it has worked. But not only did it not work but I lost all power to everything surrounding my head unit. I've searched on this forum. Have made sure all my fuses are still ok, made sure the faceplate and all leads are properly in the right place in the back. I am almost certain it's earthing properly. I'm stumped for any other reason it might not be working.
It could be that I've fried the whole thing but an putting off going to buy another one untill I've tried out all the options.
So if anyone has a slight clue please let me know . Any idea is welcome.
Thanks

 

hmm that's weird. I would take a look at the fuse one more time. But that's all I can think of.

 

You cracked the mounting point that hold the face of the headunit to the circuit board. It happens when you are not careful removing the headunit.