How to Troubleshoot & Replace Ge AP4362900 / WR55X10859 Dispenser Touchpad

Watched short You Tube repair video. I saved at least on a $100 GE service call. The electronic ID assembly was priced much less than quote on GE.com! 

The part did not fix problems, must be circuit board in back of refrigerator. 

We have really bad water here. Even with the filter in the refrigerator, we get lime deposits on the dispenser components that are hard/impossible to clean. After installing an RO system we decided to replace the dispenser components. The design had changed since our refrigerator came out and the video didn't quite match our parts, but after some trial and error we figured it out. Touchpad installation was straightforward. Less than a half hour to do everything. 

I bought a new solenoid valve, flapper and spring (for the cost, the $11 flapper and $4 for the spring made it worth). Also, the water button had broken, as my 2 year old is learning to use the fridge :) :(, I ordered a new control panel and replaced the older one. 1. Removed the plastic cover around the control panel by using a putty scraper and a rounded knife 2. Removed the control panel (Push slightly down, take flap up and pull down from the top) 3. Disengage switches in panel 4. Remove the 4 screws 5. Remove the 3 screws for the solenoid valve and place the new one. Tip, Before placing the new one, put the two screws at the botton in the valve back cover, a lot easier to install this way 6. Remove flapper, change spring, place new flapper. 7. Work all back and put back in place. Like New!