40th Anniversary Need help with ac control on 93

[Al 58]

Had all parts under hood changed over to 134 ac working great for a day until the control in dash went blank the back light works but no display. Took it out sent to place that sent a replacement when I put it in had same problem ...blank. should note it was acting up before not working then working just fine. Anyone have any idea where to go from here.

 

[moguls]

93 a/c head unit

Had all parts under hood changed over to 134 ac working great for a day until the control in dash went blank the back light works but no display. Took it out sent to place that sent a replacement when I put it in had same problem ...blank. should note it was acting up before not working then working just fine. Anyone have any idea where to go from here.

A Couple things worked for me. 1. Disconnect battery for a few minutes. This will reset the head unit. 2. There is a video on you tube explaining how to remove it from the dash and clean all the contact points and place it back in the dash. I did this very easily. 3. I also have an extra if these two ideas don't work for you. Good luck.

 

[Al 58]

ground problem or

A Couple things worked for me. 1. Disconnect battery for a few minutes. This will reset the head unit. 2. There is a video on you tube explaining how to remove it from the dash and clean all the contact points and place it back in the dash. I did this very easily. 3. I also have an extra if these two ideas don't work for you. Good luck.

Thanks,will try the battery disconnect first I got a rebuilt head unit from a vender in mo. but had same result when I swapped them I found the youtube video later on cleaning the contacts. Just don't know if its a ground problem or power.