NQ70M7770DS (AA-0000) Samsung Microwave Oven Combo - Overview

Sections of the NQ70M7770DS

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Keep searches simple, eg. "belt" or "pump".
Tapping Screw – Part Number: 6002-000520
Tapping Screw
PartSelect #: PS4133205
Manufacturer #: 6002-000520
Revive the wide array of your appliances including your Samsung Refrigerator, Samsung Dryer, Samsung Washer, and even your Samsung Dishwasher with the Tapping Screw, a crucial component engineered by ...
$6.95
  In Stock
High-Voltage Diode – Part Number: DE91-70063D
High-Voltage Diode
PartSelect #: PS4235633
Manufacturer #: DE91-70063D
Introducing the High-Voltage Diode, an essential component compatible with various makes and models of microwaves. This part is a perfect match for your Samsung Microwave, Samsung Microwave Oven Combo...
$28.95
  In Stock
Magnetron Assembly – Part Number: OM75P(20)ESGN
Magnetron Assembly
PartSelect #: PS4251288
Manufacturer #: OM75P(20)ESGN
The Magnetron Assembly OM75P(20)ESGN is a premium part specifically designed for your Samsung Microwave Oven Combo and Wall Oven. This reliable assembly allows microwaves to heat up food efficiently a...
$151.42
  In Stock
Flange Nut – Part Number: DE60-30016A
Flange Nut
PartSelect #: PS4226726
Manufacturer #: DE60-30016A
Discover the exceptional quality and performance of this Samsung-made nut, essential for your cooking appliances. Crafted with precision and in accordance with top-notch manufacturing standards, it se...
$7.82
  Special Order
Coil – Part Number: 2501-001011
Coil
PartSelect #: PS4130920
Manufacturer #: 2501-001011
Looking for a reliable part for your Samsung, Maytag, Kenmore, Jenn-air, Amana, or Magic Chef microwave? The C-OIL;910NF,2100V,BK,54X is the perfect fit. Designed by Samsung, this part is compatible w...
  No Longer Available
Tapping Screw – Part Number: 6002-000234
Tapping Screw
PartSelect #: PS4274210
Manufacturer #: 6002-000234
  No Longer Available
Noise Filter Board – Part Number: DE96-00400C
Noise Filter Board
PartSelect #: PS5576903
Manufacturer #: DE96-00400C
  No Longer Available
Taptype Screw – Part Number: DE81-01903A
Taptype Screw
PartSelect #: PS4235339
Manufacturer #: DE81-01903A
Introducing the Dacor Screw Taptype from Samsung - your ideal companion for all DIY projects! Carefully crafted with an emphasis on precision and durability, this accessory ensures smooth and effectiv...
$6.95
  In Stock
Wire Harness Assembly – Part Number: DE96-00820A
Wire Harness Assembly
PartSelect #: PS4239908
Manufacturer #: DE96-00820A
  No Longer Available
Rack Wire – Part Number: DE97-00456B
Rack Wire
PartSelect #: PS4240315
Manufacturer #: DE97-00456B
  No Longer Available
LABEL-POWER;EVN-30(FTQ38 – Part Number: DG68-00099A
LABEL-POWER;EVN-30(FTQ38
PartSelect #: PS4241142
Manufacturer #: DG68-00099A
  No Longer Available
Terminal Block Assembly – Part Number: DG96-00173A
Terminal Block Assembly
PartSelect #: PS4241550
Manufacturer #: DG96-00173A
$75.30
  In Stock

Questions And Answers for NQ70M7770DS

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Common Symptoms of the NQ70M7770DS

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No heat
Fixed by
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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 32 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 19 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 47 people found this instruction helpful.
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