This is a shot in the dark. The touchscreen on my head unit stopped working and I found a thread on how to easily repair it by soldering a connection on the circuit board inside the head unit. Well I gave it a try and now am only able to operate the stereo with the steering wheel controls, so basic functions. I really like the OEM stereo and the knobs (which stopped working) but can't justify the replacement cost. What i really need is just the circuit board inside bc everything else was operating . If there is a member reading this and can help me out that would be awesome, I imagine I could just replace the circuit board but can't find one, or maybe it is a simple repair. I've been using it like this for 6 months but pretty soon will go to the CarTrim T10 if i can't resolve my OEM unit. Let me know if you have a solution. Thank you!