• ** REMEMBER! **The microwave can still shock you even unplugged!!

    ALWAYS discharge the high-voltage capacitor first if you even think your hands will come close to any HIGH VOLTAGE components.

    Jeff mentions this: Anything in the high voltage ( magnetron, capacitor, diode, wires to and from ):
    ...Use a metal ( not the shiny chrome type ) screw driver with a insulated handle to short across ( touch both at the same time ) the terminals of the high voltage capacitor to discharge it.

    From Jeff's site: http://www.applianceaid.com/component-testing.php

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SMH9207ST Samsung microwave dim display


Premium Member
Oct 3, 2010
Model Number
6-10 years
The microwave works great but we can not see the display. I did look very hard and flash a light on it and you can see it. It is just very dim. I am not sure what supplies power to it or if that is the issue. I figured since it is still working to check caps on a board but unsure. What do you good people think ? Where should I go looking. I have a multimeter. If I have to buy an ESR meter then I will. A new toy is always good. Thank you in advance.
Do any caps show crowning? If you go the esr route, get the B&K 881.
which board should i look for the caps on. I do not know which board to start with . I have not taken the unit apart yet. I know I replace the touchpad years ago. I am not sure which boards do what or how many there are.
Unfortunately their service info doesn’t describe board level parts. I believe you have a display driver board in the door. Can you send the FCC ID number? It’s on the model label in the door.
it has some of the number missing but appears to look like

a3lotpmlst or a3lotbmlst or a3lotrmist

the 6 number is hard to make out. I have attached the label.


  • samsung microwave issue.jpg
    samsung microwave issue.jpg
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@Wx4usa is the go to guy for Microwaves, I know nothing about fixing them, as I was never trained for them when I worked at Montgomery Ward and Sears.
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