I have am SC400. So far the radio, tape, and cd have been working with sometimes cd getting stuck. That is a known issue with these systems. Anyway this morning when i turned the radio on, it would not respond. There was nothin in the display and nothing happened. I turned the car off and restarted and bunch Fs and other a few other letters like P E I, came on. The system still did not respond. I was able to eject the cd cartridge. It seeme like it sort of locked. I have been usiung the system with no issues. Have changed the battery too with no issue. Any idea what am I dealing with?

 

Could just be that one of the wires for the radio is shorting out or is not connected that good right now to the rest of the car. I could sell you another head unit for 100 obo in about another week after I install my new touchscreen.

 

Just save time and update the stock unit

 

Invest in another headunit. (with a built in amp)

Free air sub that fits in the stock location, and separate amp to control it.

Or it may be your amp giving you problems.

 

Update: I disconnected the batterey and connected it back and everything works.

 

I will update soon. What is the best option?

 

Depends on what your going for.

 

About to give you this advice. The radio doesn't completely reset just by the ignition. I would have recommended you remove all the fuses for the radio under the hood and wait a minute or two. FYI for next time.