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M197DN Samsung Microwave - Overview

Sections of the M197DN

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Keep searches simple, eg. "belt" or "pump".
Microwave High Voltage Diode – Part Number: DE91-70063D
Microwave 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 ...
$28.95
  In Stock
Tray – Part Number: DE74-20015G
Tray
★★★★★
★★★★★
(1)
PartSelect #: PS4234959
Manufacturer #: DE74-20015G
This is a cooking tray, but may also be known as a turntable tray, and it is used in conjunction with your microwave or oven/microwave combo. The outer diameter of this part is roughly 12.75 inches. T...
$60.95
  On Order
Roller Guide Assembly – Part Number: DE92-90189S
Roller Guide Assembly
★★★★★
★★★★★
(2)
PartSelect #: PS4236203
Manufacturer #: DE92-90189S
The turntable tray support holds the turntable tray while allowing the tray to rotate.
$48.95
  On Order
Call (800) Samsung – Part Number: CALL_1-800-SAMSUNG
Call (800) Samsung
PartSelect #: PS17019800
Manufacturer #: CALL_1-800-SAMSUNG
  No Longer Available
Synchronous Motor – Part Number: DE31-10154D
Synchronous Motor
PartSelect #: PS4223986
Manufacturer #: DE31-10154D
$62.95
  In Stock
Screw – Part Number: 6002-000630
Screw
PartSelect #: PS4133229
Manufacturer #: 6002-000630
$6.95
  In Stock
Self-Tapping Screw – Part Number: DE60-10082I
Self-Tapping Screw
PartSelect #: PS4226648
Manufacturer #: DE60-10082I
$20.95
  On Order
Microswitch – Part Number: 3405-001032
Microswitch
PartSelect #: PS4131190
Manufacturer #: 3405-001032
$34.95
  In Stock
Thermostat – Part Number: DE47-20032B
Thermostat
PartSelect #: PS4226428
Manufacturer #: DE47-20032B
$26.95
  Special Order
Magnetron Cover – Part Number: DE63-00209A
Magnetron Cover
PartSelect #: PS4228064
Manufacturer #: DE63-00209A
$33.95
  Special Order
Magnetron Assembly – Part Number: OM75P(31)ESGN
Magnetron Assembly
PartSelect #: PS4251299
Manufacturer #: OM75P(31)ESGN
$159.34
  In Stock
Latch Body – Part Number: DE72-00137B
Latch Body
PartSelect #: PS4234374
Manufacturer #: DE72-00137B
$20.95
  In Stock

Questions And Answers for M197DN

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Common Symptoms of the M197DN

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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:
Microwave High Voltage Diode
  • Ted from Hudson, NH
  • Difficulty Level:
    Easy
  • Total Repair Time:
    30 - 60 mins
  • Tools:
    Pliers, Screw drivers
14 of 23 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:
Microwave High Voltage Diode
  • Joel from CAMBRIDGE, MA
  • Difficulty Level:
    Difficult
  • Total Repair Time:
    1- 2 hours
19 of 40 people found this instruction helpful.
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Microwave stopped working - would not heat up
I removed the outer cover and exposed the inner workings. I watched a video on partselect.com to show how to remove and replace the Diode. I followed the instructions and it was very easy to replace.

Unfortunately, the diode was only part of the issue. I ended up replacing the High Voltage capacitor and Magnetron also. Those were a little more complicated but still easy to do.

Now the Microwave works just like new! Cost me less than $100 for all parts.
Parts Used:
Microwave High Voltage Diode
  • louis from PARRISH, FL
  • Difficulty Level:
    Easy
  • Total Repair Time:
    1- 2 hours
  • Tools:
    Pliers, Screw drivers
7 of 13 people found this instruction helpful.
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Thank you for voting!