Quiz

Good Day All, I have an AVIC-Z2 system and in the last month the touch screen will not respond to my touching it. All the manual buttons are working OK. I have clean te screen using isopropyl Alcohol with on change still will not respond to touch. OK folks any idea of what I can do to get it working again? I don't have the funds to purschase a new system. Thanks in advance for you answer and /or suggestion.