A while back, the device started making a weird noise in the middle of the night and I was wondering how to tell what's causing the noise. It's not a static noise, its a constant sound that sounds like a low hum coming through any speakers I plug into it. I've opened it up and can see no visible damage on the inside. Please help if you can.
Comments
Hi,
You did not describe the device type.
But I think the source of the noise, there may be a failure the power supply AC filter, you may hear 50Hz noise on the speakers
If you are not familiar with mains voltage repair, consult a specialist
regards,
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