M457B Microwave - Overview
Models starting with M457B
Click on the best match to narrow your results.
Keep searches simple, eg. "belt" or "pump".
Light Bulb - 40W
PartSelect #: PS2376034
Manufacturer #: 8206232A
This 40w light bulb is a replacement bulb constructed of glass and metal. It is an easy-to-install electrical part which produces 40w of light. If the bulb won't light up then it may be broken and sho...
$8.55
In Stock
Light Bulb - 40W 130V
PartSelect #: PS247209
Manufacturer #: WB36X10003
This light bulb is a 40 watt, 130-volt clear appliance light bulb that is manufactured to fit microwaves with small-base light bulb sockets. The light bulb illuminates the inside of the microwave whil...
$23.60
In Stock
Secondary Door Switch
PartSelect #: PS237421
Manufacturer #: WB24X829
The secondary door switch is a simple on/off mechanism that stops the microwave from operating when the door is open (normally opened). The switch monitors the door latch position, and communicates w...
$47.40
In Stock
Screw
PartSelect #: PS12349731
Manufacturer #: W11233072
This is a multi-use and multi-appliance screw. It can be used on a microwave, refrigerator, range/oven, air conditioner, dehumidifier, washer, or dryer. The measurements of this screw are 8 x 1/2 inch...
$21.45
In Stock
High Voltage Diode
PartSelect #: PS239843
Manufacturer #: WB27X1160
This diode has a 1/4" female connection and an eyelet.
$97.20
In Stock
Light Socket Screw
PartSelect #: PS222405
Manufacturer #: WB01X10063
This screw is sold individually.
No Longer Available
Vent Thermostat
PartSelect #: PS240278
Manufacturer #: WB27X709
The thermostat opens and closes if it gets too hot to run the vent fan.
$50.36
In Stock
Rectifier
PartSelect #: PS11738693
Manufacturer #: WP13091701
The rectifier (also known as a diode) provides the microwave with energy to cook food. If your appliance is not producing heat or not turning on it could be due to the breakdown of the rectifier. This...
$18.56
In Stock
Common Symptoms of models starting with M457B
[Viewing 4 of 4]Doesn’t shut off
Fixed by
these parts
these parts
Show All
Won’t turn on
Fixed by
these parts
these parts
Show All
No heat
Fixed by
these parts
these parts
Show All
Touchpad does not respond
Fixed by
these parts
these parts
Show All
Keep searches simple. Use keywords, e.g. "leaking", "pump", "broken" or "fit".
light worked, timer and control pad worked, but no turntable, no heat, no noises of any sort, just didn't start up
Noted on partselect.com that someone else with this problem, found it to be secondary door switch. There are three door switches in this model, but online info noted that one of the three might feel "soft" (in my case, one switch clicked in a rather "jiggly" way, the other two were strong decisive clicks.) To access the door switches on
... Read more
this model was the only difficult part. First use a torx bit to remove the two torx screws below the latches inside the microwave. This frees the latching part inside, that holds the door switches, which you will remove after you take off the control panel. The top grill has to come off before you can remove the door panel. Remove the screws above the grill, on the microwave top cover, The grill on this model is covered with a panel that moves out when it vents. After removing the two top screws, the covered grill vent slides left to remove. Be careful, as the sliding tabs are plastic. Wiggle and jiggle it, to slip it off. Below the removed grill, is a small metal grill with one screw in lower center. Remove that screw, and wiggle that out. You'll then see the one screw that holds on the control panel. Remove this screw, and lift the control panel up to remove. Again, go slowly and gently, as the bottom tabs holding the control panel in, are also plastic and easily broken. Lay the control panel on something, (I used the coffee maker) and pull out the wire bundles tucked on the left, that are attached to the latching panel. Wiggle the latching panel gently to lift it up off of it's plastic tabs and pull it out towards you, so you can see the three door switches. Each switch (part number WB24X829) has a little black switch on it. Feel each switch with either your finger, or a screwdriver to see which one doesn't "click" strongly. The weak one is the one you will replace. The door switches are fitted into a tab, and plugged into their wires. Remove the defective switch, pull out the wires, and replace it with the new switch, plugging back the wires, and slipping it back into it's plastic tabs. Then put everything back together in reverse order. The entire job took me fifteen minutes EXCEPT for figuring out how to slide off the upper grill, which I have told you. A repairman would have cost $150, the part was $18. AND, there's a good chance, the other two switches will get "used up" in the next year or so as well, so I'll be ready next time. Thank you, Partselect, why work all day, to make money, only to give it to somebody else, for fifteen minutes of work. All I needed was the knowledge.
Read less
Parts Used:
-
Marla from Arlington, TX
-
Difficulty Level:Easy
-
Total Repair Time:Less than 15 mins
-
Tools:Screw drivers
320 of 386 people
found this instruction helpful.
Was this instruction helpful to you?
Thank you for voting!
light bult needed to be replaced
The nightmare was that this microwave is installed under the cabinet....in order to get to the light bulb I had to pull out my stove then squeeze into the space between the stove and counter....my old microwave light bult was much easier to change.....Shame on Whirlpool for making this so difficult.....must be a better way to cover the li
... Read more
ght bulb so that we do not need a screwdriver to remove the door to get to the light bulb
Read less
Parts Used:
-
Deborah from Millersville, MD
-
Difficulty Level:Difficult
-
Total Repair Time:Less than 15 mins
-
Tools:Screw drivers
220 of 325 people
found this instruction helpful.
Was this instruction helpful to you?
Thank you for voting!
bulb had broken off in base that was still screwed into socket
At first I tried to use pliers to unscrew the base,very uncomfortable working position,upside down and backwards(the microwave is installed over the range top)very limited space for your body and arms to manuver and you really cant see the base,all of this took place after the breaker was turned off ofcourse,finally figured out that you c
... Read more
an drop the entire bottom housing of the microwave by unscrewing 6 screws and the light sockets are easily accessable once you lower it,take out 1 retaining screw ,remove the entire socket and unscrewed the broken base and replaced the bulbs,I said bulbs,there is no sense in having to replace another bulb in who knows how long since only one had burned out but they were both the same age
Read less
Parts Used:
-
william from san antonio, TX
-
Difficulty Level:A Bit Difficult
-
Total Repair Time:15 - 30 mins
-
Tools:Pliers, Screw drivers
93 of 109 people
found this instruction helpful.
Was this instruction helpful to you?
Thank you for voting!