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R_J
Forum:
Troubleshooting Appliances and other Household Electronic Stuff
03-06-2022, 11:55 AM
Replies:
23
Sharp R-990K Microwave started making rapid clicking sound and smoke
Views:
2,417
Posted By
R_J
Re: Microwave started making rapid clicking sound and smoke
They are fine. R11 is marked 360 which = 36Ω. R10 is 18Ω
You said the display works... correct? that means the control board is working.
the resistors are in series with each other, the filament...
Forum:
Troubleshooting Appliances and other Household Electronic Stuff
03-06-2022, 11:05 AM
Replies:
23
Sharp R-990K Microwave started making rapid clicking sound and smoke
Views:
2,417
Posted By
R_J
Re: Microwave started making rapid clicking sound and smoke
I would let it dry out for a couple days, maybe have a fan blow on the board for a while.
I would not try and remove the panel membrane, you will likely just damage it.
Check the cable for moisture...
Forum:
Troubleshooting Appliances and other Household Electronic Stuff
03-05-2022, 02:08 PM
Replies:
23
Sharp R-990K Microwave started making rapid clicking sound and smoke
Views:
2,417
Posted By
R_J
Re: Microwave started making rapid clicking sound and smoke
If the zener diode was bad or shorted the display would not have worked. The zener diode is just a 16 volt 1 watt zener. The board is discolored due to heat over the life of the mwo, it is normal and...
Forum:
Troubleshooting Appliances and other Household Electronic Stuff
03-05-2022, 11:07 AM
Replies:
23
Sharp R-990K Microwave started making rapid clicking sound and smoke
Views:
2,417
Posted By
R_J
Re: Microwave started making rapid clicking sound and smoke
From your pictures of the board where the relay is mounted, I suspect there was a poor solder connection between the relay pin and the board trace, That is likely all that was wrong. RY5 is for the...
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