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MU4270W
MU4270W Samsung Microwave - Overview
Sections of the MU4270W
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High-Voltage Diode
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 ...
$36.25
In Stock
Assembly GUIDE ROLLER;MW4370
PartSelect #: PS4236280
Manufacturer #: DE92-90436A
$27.03
Special Order
Questions And Answers for MU4270W
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Kelly
April 8, 2024
I need a replacement glass turntable plate.
For model number MU4270W
Hello Kelly, thank you for contacting us. The compatible glass tray for your model is part number PS4234999. If you need help placing an order for it, please feel free to give us a call!
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Related Parts:
Microwave Glass Tray
$62.27
In Stock
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Common Symptoms of the MU4270W
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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:
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Ted from Hudson, NH
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Difficulty Level:Easy
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Total Repair Time:30 - 60 mins
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Tools:Pliers, Screw drivers
7 of 10 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 met ... Read more er. 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.
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 met ... Read more er. 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.
Read less
Parts Used:
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Joel from CAMBRIDGE, MA
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Difficulty Level:Difficult
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Total Repair Time:1- 2 hours
11 of 24 people
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Turntable Quit
Snipped four corners off inspection panel,removed one phillips screw and two elect. Connections. Reverse process.
Parts Used:
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RICHARD from OKLAHOMA CITY, OK
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Difficulty Level:Really Easy
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Total Repair Time:Less than 15 mins
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Tools:Screw drivers
4 of 6 people
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