Any updated information on this??? my HU crapped out on me and I'm going to try and replace the ribbon. did you get a new connector plate also?
I did this to my personal Kenwood deck and it worked fine. Unfortunately the other Kenwood decks I bought that were "broken" have a security code, so I can't use them, even though I fixed them. The fix isn't difficult at all if you follow the instructions.
It is a continuation of the ribbon cable failure. The blank screen is a single channel of the ribbon cable getting split. The split then moves across the cable cutting off other functions and eventually complete failure of the head unit to function.