MW8490W (XAA) Samsung Microwave - Instructions
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- Customer:
- Ted from Hudson, NH
- Parts Used:
- DE91-70063D
- Difficulty Level:
- Easy
- Total Repair Time:
- 30 - 60 mins
- Tools:
- Pliers, Screw drivers
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.
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- Customer:
- Joel from CAMBRIDGE, MA
- Parts Used:
- DE91-70063D
- Difficulty Level:
- Difficult
- Total Repair Time:
- 1- 2 hours
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.
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.
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- Customer:
- Raymond from TROY, OH
- Parts Used:
- 3405-001034
- Difficulty Level:
- Easy
- Total Repair Time:
- 1- 2 hours
- Tools:
- Screw drivers
The microwave would not turn on or would run with the door open
Other tools that are usefull long needle nose pliers, long thin blade screw driver and small magnetic flashlight. Place the microwave on a work bench and remove the case it cover 3 sides. Place the microwave on a chair so it can stand with the controls up. You are replacing the lower door microswitch. The switch is located behind the control panel in the lower part of the area. The switch is several inches inside this area and your hands will not fit. Take care when moving wires and a couple of sensors. Use the thin blade screwdriver to release a tab holding the switch in place. Do not break this tab. Take the needle nose pliers and remove the switch. Put the wires on the new switch, open the door a short distance so a door lever moves enough to put the microswitch back into the bracket.
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- Customer:
- louis from PARRISH, FL
- Parts Used:
- DE91-70063D
- Difficulty Level:
- Easy
- Total Repair Time:
- 1- 2 hours
- Tools:
- Pliers, Screw drivers
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.
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.
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- Customer:
- Ray from GRANBURY, TX
- Parts Used:
- DE47-20030A
- Difficulty Level:
- Really Easy
- Total Repair Time:
- 30 - 60 mins
- Tools:
- Screw drivers
Thermostat failed because rivet was loose on connector blade; caused overheated wiring.
Replaced the the thermostat located above the magnetron.
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- Customer:
- Vinh from Houston, TX
- Parts Used:
- DE47-20030A
- Difficulty Level:
- A Bit Difficult
- Total Repair Time:
- 30 - 60 mins
- Tools:
- Screw drivers
Power cuts in and out; runs for a few secs then powers off
Disconnected power and removed Microwave housing cover, observed burned end plastic connector of wire connecting to the thermostat (or thermal overload sensor); slightly wiggle one of the 2 wires to the thermostat would cause microwave power to cut out (when plugged in power). When powered on, I would try to run it but power cuts out after just a few seconds. Removed the 2 wires from the old thermostat, removed the 2 screws that fasten down the thermostat, replaced with new thermostat and reapplied the 2 screws; cut off burned part of wire and resolder to new wire connector; reconnect both wires to new thermostat and reinstall MW housing cover. MW works good as new again. Thank you PartSelect!
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