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MW3100T (MAC) Samsung Microwave - Overview

Sections of the MW3100T

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Keep searches simple, eg. "belt" or "pump".
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 ...
$33.69
  In Stock
Order now and your part arrives by Jun 11
PIN-FOOT;-,-,-,-,-,-,-,- – Part Number: DE60-60025A
PIN-FOOT;-,-,-,-,-,-,-,-
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(1)
PartSelect #: PS4226770
Manufacturer #: DE60-60025A
$6.40
  Special Order
Tapping Screw – Part Number: DE60-10080A
Tapping Screw
PartSelect #: PS4226640
Manufacturer #: DE60-10080A
$6.40
  Special Order
Tapping Screw – Part Number: DE60-10045A
Tapping Screw
PartSelect #: PS4226604
Manufacturer #: DE60-10045A
$13.61
  In Stock
Order now and your part arrives by Jun 11
CBF-POWER CORD;AC,SPT-2, – Part Number: DE39-20036A
CBF-POWER CORD;AC,SPT-2,
PartSelect #: PS4225730
Manufacturer #: DE39-20036A
$80.95
  Special Order
Assembly SUPPORT-ROLLER;RE-3 – Part Number: DE92-90147A
Assembly SUPPORT-ROLLER;RE-3
PartSelect #: PS4236171
Manufacturer #: DE92-90147A
$69.91
  Special Order
SPRING-KEY;V1M2/V1M6,HSW – Part Number: DE61-70074B
SPRING-KEY;V1M2/V1M6,HSW
PartSelect #: PS4227641
Manufacturer #: DE61-70074B
$10.70
  Special Order
SHEET-DOOR;SW2,20X250 – Part Number: DE70-90018A
SHEET-DOOR;SW2,20X250
PartSelect #: PS4233746
Manufacturer #: DE70-90018A
$6.40
  Special Order
FILM-DOOR;-,T0.1,-,MW350 – Part Number: DE01-00042A
FILM-DOOR;-,T0.1,-,MW350
PartSelect #: PS4222824
Manufacturer #: DE01-00042A
$8.95
  Special Order
LAMP;ST22(125V,25W),-,-, – Part Number: DE07-90016A
LAMP;ST22(125V,25W),-,-,
PartSelect #: PS4223096
Manufacturer #: DE07-90016A
  No Longer Available
THERMOSTAT;-,NT-101,250V – Part Number: DE47-20044A
THERMOSTAT;-,NT-101,250V
PartSelect #: PS4226441
Manufacturer #: DE47-20044A
  No Longer Available
SCREW-TAPTYPE;-,-,FEFZY, – Part Number: DE60-10083A
SCREW-TAPTYPE;-,-,FEFZY,
PartSelect #: PS4226650
Manufacturer #: DE60-10083A
$6.40
  Special Order

Questions And Answers for MW3100T

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Common Symptoms of the MW3100T

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No heat
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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
22 of 35 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
20 of 48 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:
High-Voltage Diode
  • louis from PARRISH, FL
  • Difficulty Level:
    Easy
  • Total Repair Time:
    1- 2 hours
  • Tools:
    Pliers, Screw drivers
11 of 21 people found this instruction helpful.
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