Bob Davis March 05, 2023 for Model Number LMVM2055ST Hello, Our microwave timer works, clock works but when we enter a cook time and hit start, the microwave will not start . . . just the cook time starts its countdown. I ordered all three micro switches from you and replaced all three. No change in the no start issue. I have a new magnatron and a time delay fuse in my cart. Just wanted to check with you to get your expert opinion on the likely cause of my issue before ordering more parts. Thanking you in advance for your prompt response . . . Bob Davis
1 Answer Bob, The unit is starting based on the timer counting down. This would mean that the magnetron and fuse would not be the issue. This would most likely be the control board that is at fault since the door switches have been replaced. Read More...
Abonelli December 21, 2022 for Model Number LMV1813ST ANSWER Alex, Thanks for the question!!! Often the fuse will fail because of a faulty door switch 3501W1A019D. You can check the switches for continuity based on the NO or NC contacts on the switch. What if I see that the door contacts fine. Is there something else I need to look for before replacing the fuse?
1 Answer Abonelli, if the door switches tested properly when in the open and the closed state, the transformer 6170W1D052M (part has been discontinued) would need to be tested. The primary windings (terminals that do not go to the capacitor or microwave) should measure a resistance between 0.2-0.5 Ohms and the secondary windings should measure between 50-120 Ohms. If this tests good, and the windings do not have continuity to the metal frame of the transformer, the next step would be inspecting for any grounded wires or scorch marks on the main control EBR64419603. If this all checks good, the fuse 3B74133Q may have failed without an additional cause. Read More...
Alex December 21, 2022 for Model Number LMV1813ST I need to change this fuse as my unit will not power on. Is there anything I need to look for when pulling this fuse? And is this available anywhere other than online order.
1 Answer Alex, Thanks for the question!!! Often the fuse will fail because of a faulty door switch 3501W1A019D. You can check the switches for continuity based on the NO or NC contacts on the switch. Read More...
1 Answer Hello Tony, replace the door interlock switches, you will need 2 of 3B73362F and 1 of 6600W1K001C. Read More...
Tom September 27, 2021 for Model Number Lmvh1711st/00 Microwave will not turn on and is showing a f-5 error code. What part do i need to order and how do you access it?
1 Answer Hello Tom, error code F-5 indicates the humidity sensor is faulty, it is part 6501W1A013A, to access it the oven has to be uninstalled and the outer case removed the sensor is located on the top left. Read More...
Julio October 25, 2020 for Model Number 721.63292301 It works perfectly fine but then about one hour or less it stops working where pressing buttons doesn't even work so we have to unplug it and plug it in again every time so it can reset itself.
1 Answer Hello Julio, the control PCB assembly is faulty, it is part (6871W1S258D0 however it is no longer available from the manufacturer. Read More...
Ron Moore April 24, 2020 for Model Number 721-66339800 is there like a reset button on a microwave 721-66339800?
1 Answer Hello Ron. There is no reset button on the microwave. If it's completely dead you'll need to replace the fuse p/n AP4440371. Unplug the microwave, remove the cover and test the fuse for continuity. It's on the top behind the control panel mounted on the small control board. If the fuse has no continuity, replace it. Be careful do not touch capacitor terminals before discharging it. Thank you. Read More...
Dave S April 06, 2020 for Model Number LWD3010ST Neither of my top oven elements heat at all. Fans work and bottom oven works.
1 Answer Dave, You will want to turn the unit on and at the control board test from the Bake to L2 and see if there is 240 Vac. If there is not then the control board is faulty and will need replaced. Read More...
Charles July 22, 2019 for Model Number JVM3160DF3WW Will I have to take the microwave down of the wall to change the fuse. Thanks..
1 Answer Charles, the fuse WB27X11138 should be accessible without removing the microwave from the wall. With the microwave unplugged, the vent grille WB07X11411 will need to be removed. Once the grille is removed, the fuse will be located at the top section on the right and will have enough clearance to change it out. Read More...
1 Answer Dale, Yes, the microwave is designed to operate on 120 VAC 60 HZ, single phase power. The microwave would draw 14 amps under full power with the unit in a cook mode. We would expect the in line fuse to be rated at 15 or 20 amps, to compensate for power/amp fluctuations. The 3B74133Q Fuse, is the correct part to order for the model number you supplied. Thanks, Read More...