Gary S Chesterfield , MO April 25, 2014 Appliance: General Electric Zoneline AZ28E15DABM1 Four season ac?heat would do nothing Ac repairman said no control sig. I ordered main board, it still a no go. I tried the transformer, nope. Ordered the power board at back of control box. It arrived very quickly Fixed and working in 15 mins or less. Great service from Appliance Parts. I have returned first two parts, hoping returns go as smooth at ordering. Will be great place for future needs!! Read More... Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes Tools: Screwdrivers