Question about Samsung Microwave Ovens

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How do you replace the spring attachment on a samsung microwave smh7178std

Microwave runs with no heat and light comes on when door is closed . i have already changed the switches

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I'm not sure that the switch was your problem in the first place. But changing it couldn't hurt. But if your unit runs,but has no heat, it is probably the large diode that is connected to the heating unit. As for the light, the bulb may just need to be replaced.
On the other hand, one of the internal fuses may have burnt out, which could have affected both the light, and the heat circuit. In any event, you must first remove the unit's cover to access any of these parts. Good luck.

Posted on Jun 26, 2014

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Posted on Jan 02, 2017

MicrowaveSvc
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SOURCE: Samsung Microwave model # SMH7178STD just stopped working.

This is usually caused by either a bad door switch, a loose door switch mount, or a problem on the control panel.

Even though a door switch clicks, it may still be bad inside.

If you or a friend decide to look into it, we have critical information on safety, disassembly and door switches at our site, linked here on Fixya: http://tinyurl.com/yzjozk

You can find Samsung-specific parts here: http://www.samsungparts.com/search/search.asp

Posted on Nov 05, 2007

  • 185 Answers

SOURCE: no heat for microwave

its probally the magnatron

Posted on Jun 28, 2008

MicrowaveSvc
  • 9047 Answers

SOURCE: Samsung MW SMH7178STD Not Heating

I would think it may be a failure of the cook relay on the board, since the noise is quieter.

Here are some links you or someone you know can use for test help, but read their safety warnings first:

http://www.gallawa.com/microtech/diode.html
http://www.gallawa.com/microtech/mag_test.html
http://www.gallawa.com/microtech/xformer.html

Sorry i can't help more. This will need troubleshooting.

Posted on Aug 28, 2008

  • 291 Answers

SOURCE: microwave is running sounds like it is heating but

This is a very complex repair, and should only be done by a technician that has worked on these a lot. The heating problem can be wiring, magnetron, safety thermostats, high voltage diode, transformer, capacitor, or control board. Out of all the brands and models we work on this is one of the toughest to work on because of the amount of labor you have to put into it, to get into the unit to diagnose this type of problem. I would recommend that you use one of whirlpools warrantee companies, as they will probably have the most experience with this model. Good Luck, Appliance Specialists.

Posted on Dec 09, 2010

  • 6771 Answers

SOURCE: Samsung Microwave oven SMH7178STD Light, turntable,

It is more than likely the magnetron has failed, there are two additional parts that can be a factor, the high voltage capacitor and diode, both these parts work with the magnetron to generate the high voltage that heats the food. If a professional does the repairs, parts and labor will be high.

Posted on Feb 10, 2011

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1 Answer

Samsung microwave runs when door is closed


1.check fuse

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1 Answer

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There is a drive motor that opens and closes the vent fan door. It or an associated switch may have failed.

If you or a friend decide to work on it, we have *critical* safety, disassembly, and troubleshooting info at our site, which is linked at our listing here on FixYa: http://tinyurl.com/yzjozk

You can find helpful exploded view diagrams and order parts by entering your full model number (SMH7178STD) at http://www.wehaveparts.com

Nov 15, 2007 | Samsung SMH7178STD Microwave Oven

1 Answer

Samsung Microwave model # SMH7178STD just stopped working.


This is usually caused by either a bad door switch, a loose door switch mount, or a problem on the control panel.

Even though a door switch clicks, it may still be bad inside.

If you or a friend decide to look into it, we have critical information on safety, disassembly and door switches at our site, linked here on Fixya: http://tinyurl.com/yzjozk

You can find Samsung-specific parts here: http://www.samsungparts.com/search/search.asp

Nov 04, 2007 | Samsung SMH7178STD Microwave Oven

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