Question about Samsung SMH7178STD Microwave Oven
When you close the door the light and fan comes on but no heat. I changed all the door switches , and it did not fix the problem
2.check relay (microwave oven magnetron)
3, check switches of the doors
Posted on May 11, 2014
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Posted on Jan 02, 2017
some switches are normally closed "short position" press switch "open" it will be labeled NC on the one side, "stands for normally closed" and others will be NO "stands for normally open" press switch "short" if there is no change in readings when you press switch it is defective.
Posted on Mar 28, 2012
The spring attachment to the moving latch has broken off either replace the latch or drill a small hole in the latch body and attach some heavy steel wire to make a new attach point for the spring. the inside trim easily pops off and the latch just slides off.
Posted on Mar 20, 2011
You have a door switch issue. There are three behind the panel. If you can lift and hold the door and it starts one of them is bad for sure. You would be better off replacing all three or have a repair man replace them because a microwave can hold 3000v even unplugged.
Hope it helps.
Thank you for using FixYa.
Posted on Aug 20, 2011
If you can lift the plastic door latch catches with no resistance, it is most likely the spring/plastic connector. I removed the door by lifting up, pulling the bottom forward, and lowering. I removed the inside black plastic bevel with a jewelers flat screw driver, prying from the latch side's external edge. Once it was started, I could pull it of with a gentle lift. I took out the black plastic latch, drilled a hole near the broken piece and all was good. Samsung is not on my radar for any future purchases. This is the 3rd major purchase that barely made it past warranty or not even thru warranty.
Posted on Nov 27, 2011
SOURCE: microwave door wont stay closed
replace the door hooks and door release button.
if this is broken the switch will not close very well, and NOT start the microwave.
God bless you
Posted on Jul 20, 2012
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