Creality Ender 3 V2 TH3D EZABL Troubleshooting Repair Blank LCD Alarm Orange Screen Beeping

A customer dropped this off for repair. He did some very nice upgrades but somewhere along the way the firmware had a problem. I'm suspecting he loaded the wrong Marlin firmware for his board. The board are very specific. You need the right pinouts in Marlin or all hell will break loose. I'm guessing the pinouts where wrong for that LCD. The Creality V2 screen is not a real screen that interfaces with Marlin. Its more like a mini computer sending gcode.

Creality BLtouch
https://www.amazon.com/gp/product/B08MD45N9H/ref=as_li_tl?ie=UTF8&tag=fintechcomm0f-20&camp=1789&creative=9325&linkCode=as2&creativeASIN=B08MD45N9H&linkId=85abad448769b5525173dc01a8847dc9

MicroSwiss Extruder
https://www.amazon.com/gp/product/B08CGN18KJ/ref=as_li_tl?ie=UTF8&tag=fintechcomm0f-20&camp=1789&creative=9325&linkCode=as2&creativeASIN=B08CGN18KJ&linkId=ae438412e01d4186dd73297b546398d3

SKR Mini E3 Board
https://www.amazon.com/gp/product/B089CQ3DHB/ref=as_li_tl?ie=UTF8&tag=fintechcomm0f-20&camp=1789&creative=9325&linkCode=as2&creativeASIN=B089CQ3DHB&linkId=837ef1b535cb248d18c578b7bd43d328

If need help with your 3D printer and in Orange County CA call my number below
949-642-2911