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I have samsung microwave model CE2877N Problem is Grill starts automaticaly after plug in power

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SOURCE: replacing fuse in samsung microwave model number shm9187

there should be a fuse inside on the AC line and it may be on the inverter(power) board of the unit.

Posted on Nov 03, 2012


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Replace microwave coil

If your microwave is totally dead, it may be the line-fuse that is the problem. Leave the microwave unplugged for a day (it may contain a capacitor that could have residual electricity that could give you a nasty jolt). Undo the screws that hold the front outgoing-vent grill.
You may be able to see the fuse through the secondary grill (they don't want you touching the circuit-board, but you may have to). The line-fuse may be attached to the circuit-board.
If it is, undo the secondary grill screws, and bend the tabs that hold the secondary grill to remove the secondary grill.
Pull-out the fuse from the fuse-holder, and get an ohm-meter to test. If the ohm-meter reads near-infinite ohms across the fuse, get a magnifier to read what is on the end of the fuse.
The imprint on the old fuse should mention a rated voltage, and amperage.
Then go to Radio Shack, and buy an equivalent replacement fuse.
Replace the line-fuse with a new one, plug the microwave back in, and see if the display comes-alive, and if it does, set the clock ad try to heat a cup of water. If the cup of water heats, replace the secondary-grill (careful, that capacitor is now in-play) and screws, replace the outlet-vent-grill and screws -- you may not even have to take the microwave off of the wall !

Sep 27, 2013 | Samsung Microwave Ovens

1 Answer

Samsung microwave malfunction

I too have this problem with my KitchenAid KHHS179LSS-5 model. Based on the owner's manual I located behind the grill which pulled off, the F7 Error code indicates that power to the magnetron was interrupted. You will want to make the following checks: 1. Unplug microwave oven or disconnect power. 2. After 40 seconds, check to see whether this solves the problem. 3. Unplug microwave oven or disconnect power. 4. Check resistance of the magnetron thermostat. 5. Check the magnetron. 6. Check wiring to the 1100W inverter and control system. See "Checking Inverters." 7. Plug in microwave oven or reconnect power. 8. Check operation of all interlock switches. Check door, hinge and cavity front alignment. Adjust as needed. 9. Unplug microwave oven or disconnect power. 10. If switches operate correctly, replace 1100W inverter. 11. If problem persists, replace electronic control. 12. Plug in microwave oven or reconnect power.

After removing the control display, there is a virtual zoo of connectors. So unless you repair microwaves on a regular basis, it may be difficult to ascertain which ones go to the magnetron thermostat. I will probably resport to shelling out the dough to get someone to fix it. Sorry I couldn't be more helpful.

Jun 27, 2013 | Microwave Ovens

1 Answer

How to use grill microwave oven qw71x / DE68-03012A

Microwave Ovens Grill Microwave Ovens Grill are usefull in making food more delighful.

Sep 03, 2010 | Samsung Microwave Ovens

2 Answers

Microwave turns itself off after a couple of seconds

Q - My microwave seems to shut off every once in a while, what might be wrong?
A - Make sure you hear the fan is still operating in your microwave. Next is to make sure the air intake grill on your microwave is not plugged up with air borne dust and dirt.
Q - The fan in my microwave oven is not running will this hurt my microwave?
A - YES, the fan cools the magnetron and electronics, take the microwave in for service, most fans are not too expensive to replace.
Q - My microwave blows the fuse inside itself as soon as I push the start button.
A - Usually a shorted high voltage capacitor...see components section.

Mar 06, 2009 | GE Spacemaker JVM1640SJ Microwave Oven

1 Answer

Kenmore microwave model 665.61629100

20amp fuse above the control panel.. but behind the vent grill..

Jan 16, 2009 | Kenmore 63792 Microwave Oven

3 Answers

Microwave lost all power when I pressed start

Plug a lamp into the circuit where the Microwave is plugged in. If the lamp comes on then you know there is power supplied to the microwave and the problem is one of an internal nature. If your light does not come on then your breaker at the main power panel could have tripped. On each breaker is a number which is its rating in amps. Your Microwave may require a 20 amp circuit.

May 11, 2008 | Kenmore 62642 / 62644 / 62649 Microwave...

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