My unit makes a buzzing
Hello,
the buzzing noise is as a result of a electrical fault on the power board on the unit. Basically, the diode on the power board is usually the cause of this'
A diode is an electronic component that readily passes current in one
direction only and blocks the flow of current in the opposing direction.
If your unit's diode has become defective, it can make you hear a buzzing noise. Test the diode to determine if
this is the cause of your problem. Replace it if it is defective.
Whether it is shorted or open, a defective diode will most likely show
some sign of defect. Defective diodes will usually emit an electrical
burning smell, signifying its defectiveness. Also, it may have split in
two, or it may exhibit a burned crack, or possibly even a blistered
spot.
A shorted diode is indicated by a buzzing noise from the voltage transformer.
If you cannot perform this task by yourself, then you might be needing the help of a repairman or you can call a friend that has the ability to help you out.
I wish you the best of luck.
