RM778PXT0 Whirlpool Microwave Oven Combo - Instructions

Removed 5 screws on microwave trim and three additional screws on cabinet. Pulled microware part way out to expose broken drive belt on top and replaced with new one. Note: Microwave cabinet caught on connector in back of chasse and pulled it loose. Moderate difficulty in reaching back and reconnecting it. Otherwise an easy job that saved $125 on service call and part was half the cost.

First off if you are repairing an appliance this old better have some super glue. Many of these parts are no longer available. If the latch breaks with the door closed you can clear the broken plastic latch and open the door with a straightened coat hanger through the handle into a hole on the door which will trigger the latch. Once the door is open there are two screws that hold the black plastic trim piece on the inside of the door. Remove them both (Phillips head). The piece will come off. The handle is held to the front of the door by two more Phillips head screws. One at the top and one at the bottom. The handle in the front will not yet come off. There is one more screw that can only be reached by separating the door parts so you can get the screwdriver in. Now the whole handle will come off. Orient the new handle "trigger" so the piston can go through the hole in the handle. Be sure to put the spring on so it goes between the trigger and the handle. Now put the handle back on the door being sure to put the piston through the hole in the handle. It is best to put that screw in the middle back in place first then the others at the top and bottom. Put the plastic trim piece back on the inside and your are done. For what it is worth the trigger that I got is brown and not black like the other trim. Really not much of an issue.

I went to the source of power on the stove and noticed one of the terminals had come loose from the terminal block and had shorted out against the cover of the terminal junction. After prying the loose terminal off cover I ordered new terminal block and received it the 2nd day. I removed the old terminal block and replaced the part in about 10 minutes..Thank you Parts Select for your easy to find diagrams and quick delivery.

This is a 1988 vintage microwave oven. I'm very relieved to have parts still available. The stirrer drive belt tore. I suspect dry rot, as I did this exact repair back in 2005.You simply remove the cover, replace the belt [easy] on top, and replace the blown fuse. While the oven cover is off blow out all accumulated dust and wipe/clean all areas that have a build up of dirt/crud. I purchased this microwave oven in 1988 and is very dependable.

Received the part the day after ordering. Appreciated the quick service and repair took less than a minute.

Had to screw off old terminal block & screw on new one