On Tuesday, September 1, 2015 at 8:11:27 AM UTC-5, wrote:
I am pretty sure that its the rotary knob as its pretty loose and doesn't do what it's supposed to do. The RJ12 connector is solid but when I push or wiggle the connector it will come on and off, however as I can do the same thing wiggling the knob I am not sure if it is not both I checked the wiring by borrowing another display and it works fine.

Cliff, I have exactly what you want and am ready to sell. Make me an offer..
You have my phone number, I believe.
Herb