I've got a 2001 U320 with the original Sharp 1851.... I've removed everything I can, bottom cover, door, push button face, plastic front covers .... And yes the two long bolts underneath that mount this beast..... what am I missing? I've even removed the carpeted box above that covers the vent, looked under the carpet right above the microwave too.... I'm losing the battle at the moment, but hopefully with some of y'all's help I'll win the war!
There are screws across the top at the door opening behind the upper vent panel. Just pop that panel off and you will see them. Be sure and get those screws back in the new one. You will need to take off the upper vent on the new one to install.
Larry
Here's what it looks like right now
Look very close for screws coming in from inside the lower right corner of the cabinet to the left. You may have to remove a trim piece inside the cabinet to find them. Also screws going up into the face frame above the microwave. There may even be some from inside the fridge compartment but weren't on mine. Try wiggling the microwave to see if you can feel where the screws are holding it.
Rich
The top screws are inside the SS frame opening. Mine are black on black and very hard to see.
Rich
First OP complete: found said screws, my blind butt finally saw them. Now to clean and oil the wood trim that hasn't seen any love in 21 years. Some new foam trim around vent and off to phase Two of the Operation N-Stall. Wish me luck!