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Samsung MicroWave Mod# SMH7178STD Ser# 7MTY3020IT Turns on automatically when you shut the door,you can push and pull on the door until it stops.

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  • Jerry Kerns Feb 02, 2010

    Thank You !
    That was some good info!

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  • Microwave Ovens Master
  • 19,396 Answers

Hi.

If the microwave is turning on when you close the door, and stays on, even when the timer is off, then it is either a faulty control board, or a contact in the wiring harness.

If the controls are responsive, but fan stays on when you shut the door, then it is definitively a wiring problem. If controls are not working at all, then the control board may also be responsible.


The wiring harness is part 20 on diagram below, here the part: PS942098 . The Latch is part nr.2 PS2160550


Samsung MicroWave
Mod# SMH7178STD
Ser# 7MTY3020I - 0ba3727.gif



On control assembly, before replacing the pcb (part 7 in diag), the control pad ( part 12) can also be tested, disconnecting it , and starting the appliance with magnetron not connected. For safety reasons this test must be done by a trained technician.

7abc68c.gif



Here all parts and diagrams for your appliance.

For safety reasons testing and repair must be done by trained personal.

Before repairing, I suggest contacting Samsung to get a quote on repair. The contact number is listed on the use and care manual.

Regards.

Posted on Feb 01, 2010

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