Question about Samsung SMH7178STD Microwave Oven

1 Answer

Microwave not heating

Power is there, turntable etc. works, just not cooking.

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  • 3 more comments 
  • Anonymous Jan 28, 2009

    I put the unit on 80% and can hear mag cycle on and off, but no heat

  • lesfall Jan 29, 2009

    Model No. ME612W/ME6124ST .Lights, turntable work as does the timer.

    Video sounds the same as machine.

    Was a prize in comp. so am having trouble getting assistance. It should still be under guarantee, but wondered if it might have been sonething small I could do.

  • downeyde Apr 16, 2009

    I HAVE THE SAME PROBLEM.

  • jerrysumner May 08, 2009

    Everything works but no heat.
    Is it better just to buy a new one? What kind of costs for repair?

  • William Miller
    William Miller May 11, 2010

    When you hit Start to
    cook, do the inside light and turntable come on?




    Any unusual noises? Is
    it louder or quieter than usual?



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


    What is the model number?



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  • Samsung Master
  • 8,858 Answers

With the symptoms you have, I would most strongly suspect a shorted high voltage rectifier diode or a bad magnetron, or a loose and possibly corroded connection on the magnetron's terminal.

If it's fully covered under warranty. I'd suggest contacting the manufacturer to get it fixed free.

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

Posted on Jan 31, 2009

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