BOARD FAN SENSOR

Replaced upper cooling fan and board on double oven by removing covers on top and back.

Very straight forward repair except for removal of the fan mount plate. There are 4 sheet metal screws, 2 of which are obvious and shown in the appliance diagrams, and 2 of which are neither on the appliance diagram nor obvious. These screws are beneath the motor assembly and oriented with the heads between the mounting plate and the top of the oven - about a 3/8 inch gap. Removal was accomplished using a 1/4 inch open end wrench strictly by feel as there is no sight line. Not all that challenging, but still a pain. On reassembly, these screws were reversed so that the head is now on the top of the plate and more accessible.

Removed the top and back covers using a nut driver. Removed fan which is on top of the unit. Installed fan sensor board on new fan using torx bit (board can also be swapped from the old fan if you feel this isn't part of the problem). Installed new fan into oven and replaced the covers.
I built a small table out of scrap wood I had making it the same height as the bottom of the oven in order to make it easy to slide out/in and then work on it. If I didn't do this it would have to be a two person job because the oven is heavy.