Ours was doing the same, no beep and the "mute" on the display despite having no mute button. Also, the surface light and fan had recently stopped working even though the buttons worked. Unplugging it did the trick! Maybe it's running Windows?!
From what you have described, it appears that the microwave oven works fine, except that the beeper doesn't work like it used to.
This could be caused by a couple of things.
First, there is typically a piezo electric speaker that creates the "beeping" sound. It's possible that this part has failed. It's a mechanical device and can break. This part is relatively inexpensive.
The piezo speaker is controlled by the microprocessor board. It's possible that there is a problem with one of the output lines from the microprocessor that is tied to the speaker.
One way to determine which part is defective, is to try connecting another speaker in parallel across the original speaker, or remove the original and try the replacement (least expensive method).
If there still is no sound, then I would suspect the problem is on the microprocessor board. (most expensive method).
If I can be of further assistance to you, please let me know.
Good Luck!
- Jim
Hi,
Here is a tip that will help you to figure out what is wrong with your Microwave Oven....
Microwave Oven Basic Troubleshooting Tips
heatman101
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Hi,
Here is a tip that will help you to figure out what is wrong with your Microwave Oven....
Basic Microwave Oven Troubleshooting Tips
heatman101
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