Models > MW4391G

MW4391G Samsung Microwave - Overview

Sections of the MW4391G

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High Voltage Diode – Part Number: DE91-70063D
High Voltage Diode
★★★★★
★★★★★
(4)
PartSelect #: PS4235633
Manufacturer #: DE91-70063D
This high-voltage diode is designed for use within various makes and models of microwaves and is a genuine OEM part that converts alternating current (AC) into direct current (DC). If you notice your ...
$29.87
  In Stock
SPRING-BUTTON;-,HSWR,PI0 – Part Number: DE61-70076A
SPRING-BUTTON;-,HSWR,PI0
PartSelect #: PS4227643
Manufacturer #: DE61-70076A
$14.59
  In Stock
Motor - Synchronous – Part Number: DE31-10154D
Motor - Synchronous
PartSelect #: PS4223986
Manufacturer #: DE31-10154D
$69.47
  In Stock
Microwave Glass Tray – Part Number: DE74-20102D
Microwave Glass Tray
PartSelect #: PS4234999
Manufacturer #: DE74-20102D
$62.39
  In Stock
Incandescent Lamp – Part Number: 4713-001102
Incandescent Lamp
★★★★★
★★★★★
(1)
PartSelect #: PS4132144
Manufacturer #: 4713-001102
$38.27
  In Stock
Flange Nut – Part Number: DE60-30016A
Flange Nut
PartSelect #: PS4226726
Manufacturer #: DE60-30016A
This flange nut is designed for use within various cooking appliances like ranges, microwaves and wall ovens. Flange nuts are typically used to evenly distribute pressure across its application surfac...
$4.67
  In Stock
Door Lever – Part Number: DE66-90013A
Door Lever
PartSelect #: PS4231371
Manufacturer #: DE66-90013A
$37.07
  In Stock
Tapping Slef Screw – Part Number: DE60-10082I
Tapping Slef Screw
PartSelect #: PS4226648
Manufacturer #: DE60-10082I
$31.07
  Special Order
SWITCH-MICRO;125/250VAC, – Part Number: 3405-001032
SWITCH-MICRO;125/250VAC,
PartSelect #: PS4131190
Manufacturer #: 3405-001032
$26.67
  In Stock
Fuse-Cartridge – Part Number: 3601-001197
Fuse-Cartridge
PartSelect #: PS4131368
Manufacturer #: 3601-001197
$37.07
  In Stock
Thermostat Assembly – Part Number: DE47-20008A
Thermostat Assembly
PartSelect #: PS4226405
Manufacturer #: DE47-20008A
$32.27
  In Stock
FOOT;-,PP(A353),MW5630T, – Part Number: DE61-40017A
FOOT;-,PP(A353),MW5630T,
PartSelect #: PS4227340
Manufacturer #: DE61-40017A
$4.19
  Special Order

Questions And Answers for MW4391G

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Common Symptoms of the MW4391G

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No heat
Fixed by
these parts
Fixing
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Keep searches simple. Use keywords, e.g. "leaking", "pump", "broken" or "fit".
Buzzing noise, no heating of food
Removed control panel, discharged HV capacitor. Removed old diode, tested to confirm failure. Replaced part. Other than the removal of the panel swapping the part was almost as easy as replacing a light bulb.
Parts Used:
High Voltage Diode
  • Ted from Hudson, NH
  • Difficulty Level:
    Easy
  • Total Repair Time:
    30 - 60 mins
  • Tools:
    Pliers, Screw drivers
8 of 12 people found this instruction helpful.
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Appears to work, but food not heated
The high voltage tired was shorted. I replaced it with a new one, but that did not solve the problem.

You can test the high voltage tired with a voltmeter and a 9 V battery. Search Search for it on YouTube.

You can also test the high voltage capacitor, the high-voltage transformer, and the magnetron with a multi meter. Search for the procedures on YouTube.

I tested all these high-voltage components with a low-voltage multi meter, and they all checked out OK (after replacing the diode). However the microwave still did not heat food.

When working on a microwave it is important to unplug it and also discharge the high voltage capacitor. The capacitor has a 10 megaohm resister to automatically discharge itself, but it may have failed – – so discharge it manually.

In the end I ordered a new microwave.
Parts Used:
High Voltage Diode
  • Joel from CAMBRIDGE, MA
  • Difficulty Level:
    Difficult
  • Total Repair Time:
    1- 2 hours
11 of 24 people found this instruction helpful.
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Turntable Quit
Snipped four corners off inspection panel,removed one phillips screw and two elect. Connections. Reverse process.
Parts Used:
Motor - Synchronous
  • RICHARD from OKLAHOMA CITY, OK
  • Difficulty Level:
    Really Easy
  • Total Repair Time:
    Less than 15 mins
  • Tools:
    Screw drivers
4 of 6 people found this instruction helpful.
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