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Re: I have a samsung smh7177ste/be microwave that will...
The problem is one of three things, the magnetron "common issue" or the high voltage capacitor and diode can be a factor, the above mentioned work together to heat food. Depending on the nature of the repair, parts and labor can run as high as a new microwave oven.
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Hi, When a micro wave quits heating there can be a number of different issues that could cause it not to heat. Because of the way a microwave works it is best to have it checked out by a professional that knows how to handle the high voltages that can be present inside a microwave oven.
Here is a tip that I wrote about troubleshooting microwave ovens and explains things in more detail.
Hi,
Here is a tip that will help you to figure out what is wrong with yourMicrowave Oven....
Its tripping a high limit most likely. Be careful there is 2100 to 4000 volt high side with a capacitor if its not an inverter. The standard components consist of noise board, fuse, touch panel and power controller, high limits, door switches, whipper motor, fan, transformer, capacitor, transformer, magnetron, diode, plate rotator.
Discharge cap (for safety and further testing)..
Test fuse; if fuse tests blown test door switches first.
Test limits.
Check amp draw with slow blow fuse; open door to stop unit and again discharge capacitor.
Test resistance to ground on whipper, fan, magnetron, light.
Test resistance lead to lead (measurable on motors/coils/magnetron).
Test capacitor in ferrads, compare to spec on print.
Check diode forward and reverse.
Test output voltage from power control board to transformer.
Test transformer coils.
Best of luck and play safe; dont test voltage output from the transformer, voltage at capacitor or magnetron.
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Is the hood vent exhaust fan running, and do you feel good air flow?
If not, please reply back.
If the oven is not venting properly, moisture can build up inside the cavity and door panels. This will cause a condensation or steam buildup that looks like smoke.
Normally
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) that demonstrates how it's done.
You can usually find helpful exploded view diagrams and order parts by entering your full model number here.
As you're disassembling, be on the lookout for cracks. Once you clean it, if you've found any cracks, 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.
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