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MS840WB Maytag Microwave - Overview

Sections of the MS840WB

[Viewing 4 of 4]
Keep searches simple, eg. "belt" or "pump".
Micro Door Switch – Part Number: 3405-001034
Micro Door Switch
★★★★★
★★★★★
(12)
PartSelect #: PS4131192
Manufacturer #: 3405-001034
This door switch, also known as a safety switch, is a genuine OEM replacement part for microwaves. It is a safety mechanism that sends signals to the microwaves control system, telling it when the doo...
$32.63
  In Stock
Order now and your part arrives by May 24
Microwave Light Bulb – Part Number: WP8183592
Microwave Light Bulb
★★★★★
★★★★★
(6)
PartSelect #: PS11745088
Manufacturer #: WP8183592
Sold individually.
$35.80
  In Stock
Order now and your part arrives by May 24
Micro Switch – Part Number: 3405-001033
Micro Switch
★★★★★
★★★★★
(1)
PartSelect #: PS4131191
Manufacturer #: 3405-001033
$30.53
  In Stock
Order now and your part arrives by May 24
Microwave Fuse 15 Amp 250v – Part Number: WPY01050009
Microwave Fuse 15 Amp 250v
★★★★★
★★★★★
(1)
PartSelect #: PS11757434
Manufacturer #: WPY01050009
  No Longer Available
Rectifier – Part Number: WP13091701
Rectifier
★★★★★
★★★★★
(1)
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
Order now and your part arrives by May 24
Glass Cooking Tray – Part Number: W10132129
Glass Cooking Tray
PartSelect #: PS1737933
Manufacturer #: W10132129
  No Longer Available
Magnetron – Part Number: WPW10126794
Magnetron
PartSelect #: PS11748665
Manufacturer #: WPW10126794
$173.93
  Special Order
Microwave Thermostat – Part Number: DE47-20173A
Microwave Thermostat
PartSelect #: PS4226479
Manufacturer #: DE47-20173A
$30.53
  In Stock
Order now and your part arrives by May 24
C-OIL;860NF,2100V,BK,35X – Part Number: 2501-001035
C-OIL;860NF,2100V,BK,35X
PartSelect #: PS4130934
Manufacturer #: 2501-001035
$136.76
  In Stock
Order now and your part arrives by May 24
Button Spring – Part Number: DE61-70076A
Button Spring
PartSelect #: PS2153600
Manufacturer #: DE61-70076A
  No Longer Available
COUPLER – Part Number: DE67-00140A
COUPLER
PartSelect #: PS2155979
Manufacturer #: DE67-00140A
  No Longer Available
BODY-LATCH – Part Number: DE72-00138A
BODY-LATCH
PartSelect #: PS2157748
Manufacturer #: DE72-00138A
  No Longer Available

Questions And Answers for MS840WB

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Common Symptoms of the MS840WB

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No heat
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Doesn’t shut off
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Won’t turn on
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Keep searches simple. Use keywords, e.g. "leaking", "pump", "broken" or "fit".
Blown Fuse - Ps1750182
Unscrewed the cover of the microwave replaced the blown fuse with the new fuse, plugged in the microwave and tested all functions and everything worked fine. Thx for quick delivery.
Parts Used:
Microwave Fuse 15 Amp 250v
  • John from Inverness, FL
  • Difficulty Level:
    Really Easy
  • Total Repair Time:
    Less than 15 mins
  • Tools:
    Screw drivers
12 of 14 people found this instruction helpful.
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Light bulb burned out.
Found instruction on internet,
1. Remove anit-tampering screws with punch and hammer
2. Remove the rest of the screws
3. Removed cover
4. Remove burned out bulb and installed new one
5. INstalled cover
6. Installed screws including the anti tampering onces
7. Op tested unit.
Wife is happy.
Parts Used:
Microwave Light Bulb
  • Stephen from Cottonwood, AZ
  • Difficulty Level:
    Easy
  • Total Repair Time:
    Less than 15 mins
  • Tools:
    Screw drivers
16 of 33 people found this instruction helpful.
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microwave ran with the door open
First I read through the customer comments, reviews, questions, etc. at Parts Select, which is always a good bet. Then I put "samsung microwave door switch replacement" into youtube and watched some videos. They don't even have to be for Samsung. From what I can tell, many of the appliance companies use the same design and the same junk parts, so watching a GE video is almost the same for example. Watch some videos to familiarize yourself with the steps. There are maybe six to disassemble and install the new part. I replaced all three switches. They are not expensive and to replace 3 is only 5% more work than to replace just one; you have to take the microwave apart in either case. UNPLUG THE MICROWAVE FROM THE WALL. Start taking it apart. I use my phone to take a picture of any thing I remove, unscrew or disconnect, especially wires, BEFORE I disconnect them. Thee pictures serve as a reference when I go to reconnect and reassemble. If I am uncertain then I check the picture. Good luck!
Parts Used:
Micro Switch Micro Door Switch
  • david from WASHINGTON, DC
  • Difficulty Level:
    Easy
  • Total Repair Time:
    30 - 60 mins
  • Tools:
    Screw drivers
9 of 14 people found this instruction helpful.
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Thank you for voting!