Both evap fans work fine, holding door switch closed to test. The Beverage cool area in the FF door recieves airflow when selected from the menu. I did not test chilling drawer operation, however the homeowner had with negative results.
I suspected a thermister fault, and was hoping for a diagnostic routine. Setting the desired FF temp to either end of the range has no effect on actual or displayed FFtemp.
Test port for the motherboard makes sense. The last 'Expert' from A&E dianosed a bad control board, so that would be in play. The following tech diagnosed low freon, and "fixed" it about 2 years ago. No line taps anywhere to put gauges on it, however. (?)
If it the the same thermisters as the GSS/GSH series... I know them well. I am rebuilding the control boards for that series now with a fair success rate. Toying with the idea of making an Arduino based replacement.....
If he's so informed, why'd he buy a GE?
Well, it its due to the nature of our community. 780 houses, retired military officers. "Serving those who served" We had a contract with GE for our appliance supply and repair services from '86 up until early '08, and that was when I came on board at the company. We now use Sears...Meh. The 16-20+ year old GE THX/TBX series are GREAT! Good service life. They are still in population, 40% maybe. The GSS and GSH series were installed after that as the 'standard' until '08, when we went to Sears. This unit was installed 1JUN07 and was considered the best upgrade one could have with 'The General'. Little did they know.