Question about Samsung SMH7178STD Microwave Oven

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Killed the microwave by running it empty for 30 minutes.

I have a Samsung microwave model SMH7187STG. I put in 30 minutes and pushed "start" instead of "kitchen timer". I left and when I came back the power was off and the inside was hotter than hell. Is there a fuse or anything to replace that will bring it back to life?

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YES THERE IS AN INTERNAL FUSE OR DIODE YOU CAN CHANGE, BUT YOU SHOULD BE CAREFUL AN LET A PRO DO IT, YOU JUST DON'T WANT TO GET ZZZAPPPP WITH THE CAPACITOR THAT STORAGES HIGH VOLTAGE INSIDE TO PROVIDE THE MICRO WITH POWER, IT MAY SEEM LIKE A LIL UNIT BUT IT CAN HURT YOU IF YOU DONT DE-ACTIVATE IT RIGHT, NOT SURE IF THE DIODE WOULD BRING IT BACK BUT CHECK WITH A SERVICE MAN, BEFORE DOING ANYTHING I WOULD!

Posted on May 28, 2009

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Posted on Jan 02, 2017

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RE: Samsung microwave SMH7187STG mfg'd 5/08. I heated cup of tea 2 min.Then I closed micro's door & micro emitted a continuous electrical buzzing sound.I opened door & buzzing stopped.


The cook relay on your control board is shorted, and the unit is cooking whenever you close the door.

When the magnetron overheats, its thermostat opens, shutting power down until the unit cools to a safe level, then power is restored.

I regularly repair these with my $54.95 service, which includes insured return shipping.

Details are here, or for full information and instructions, please e-mail me here at pupista@gmail.com and remind me of your full model number and symptoms.

Dec 20, 2016 | Samsung Microwave Ovens

1 Answer

My Samsung microwave model SMH7187STG 1.65 KW is showing error message E-13


E-13 T1 Max time error (oven did not preheat properly). This can be due to improper power line voltage, a failing thermistor, a bad damper seal, or possibly a faulty control circuit board. I would first verify proper operation with the manual, then if it still acts up and if it's in warranty, I would contact Samsung support. But if it's out of warranty and works okay otherwise, it may not be serious enough to worry about.
Hope this helps.

Oct 31, 2010 | Samsung Microwave Ovens

1 Answer

Will not heat and the truntable will not run


It's almost certainly the primary interlock (top door switch).

See this file for details on checking and replacing door switches.

You can also see the video at our site, which shows you how to access the door switches.

We have the service manual for the model SMH7178STE here, which should be pretty similar. It will also help you with disassembly.

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

May 06, 2010 | Samsung 1.8 Cu. Ft. Over-the-Range...

1 Answer

Whirlpool gold accuwave microwave oven lost power afer running em


Hello Davisaroundt, we are sorry to hear about your Microwave not powering on. If you would like for us to schedule service for you, then can you please email your address, phone number, the model and serial number, the website you were contacted on, Fixya, your review ID, and date of purchase to Whirlpool_Digital@whirlpool.com?

Jun 13, 2017 | Whirlpool Accuwave Microwave Oven

1 Answer

My microwave stops goes dead after running for 2 minutes


It may be that the magnetron is overheating. The main causes:

- blocked air vents
- blocked air outlet or duct (if an over the range type)
- clogged grease filters needing to be cleaned
- clogged charcoal filter needing to be replaced
- failed internal cooling fan
- failing magnetron

Depending on the model, it may have a thermostat on the magnetron so that the power is killed if it overheats, then it comes back on when it cools down.

We have a sound clip of what a microwave should sound like when the cooling fan and high voltage section are operating here.

Please listen to that and compare it to yours. You may hear that your cooling fan is not running.

When I say internal cooling fan, I do not mean the hood vent exhaust fan which you can turn on and off manually.

I'm instead talking about the internal fan which comes on automatically whenever you microwave.

It is vital that the cooling fan runs, or the turntable and stirrer won't work, and magnetron will soon be destroyed.

If instead the microwave starts microwaving then it scrambles and then comes back up as if someone unplugged it for a couple of seconds and you can set the clock and start again, then you have a magnetron that is leaky.

Once you listen to that and check your vents, filters, etc., let us know what you find so we can take it from there.

Please note that FixYa is not currently notifying us Experts when Clarification Requests are answered.

To allow us to help you effectively (at no charge), please post a
NEW problem to FixYa, and please include your brand name and the full model number from the tag in or on the unit, and your detailed symptoms, as well as the results of these recommended checks.

Dec 12, 2009 | Samsung Microwave Ovens

2 Answers

I need a schematic for an over the range microwave door in order to replace the handle. A samsung model SMH7187STG


Do you have the new handle already? I need a whole new door due to a scratch and will have a new handle from the scratched door that I wont need........

Oct 25, 2009 | Samsung Microwave Ovens

2 Answers

My mother just bought an Emerson MW8119 Microwave and can't figure out how to only set say 15 seconds cook time. Is it possible?


Hi! I just purchased the same microwave, and came online to find the solution. I was then able to find the correct answer to this problem. On this model, Emerson does not put a "time cook" button for odd cook times such as 15 seconds. Instead, they have you push the "Power Button" prior to setting the cook time.

If you want to cook on full power, press the power button once, and then enter your cooking time and press start. If you want to cook on 50% power or 30% power or something like that, push the "Power Button" several times until the appropriate power level is displayed, then enter the cook time and press start.

The reason that it starts up right away when *********** pushes the 1 button is because Emerson has the quick cooking feature for 1 minute through 6 minutes. You only have to push the number once to get the 1 minute cook time or anywhere through 6 minutes respectively.

Hope this helps!

Jun 22, 2009 | Emerson Microwave Ovens

1 Answer

Convection oven stops every 5 minutes and won't continue


to trouble shoot hold the door securely shut for longer than 5 min to see if it runs longer if it does the you should replace the interlock devise

Dec 25, 2008 | Sharp R-930AK Convection/Microwave Oven

1 Answer

Replace broken door handle model No.smh7187stg


You have to separate the door panels (as shown in the attached photo) and then you'll see the previously hidden screws you need to remove.

Or you can watch a YouTube video (not a video I made) here that demonstrates how it's done.

You can order Samsung parts here.

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

Aug 30, 2008 | Samsung Microwave Ovens

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