What causes a High Pitch Noise in a TV? Several things could lead to a high-pitched noise from your TV. Different components inside the unit can produce these noises. These include the deflection yoke, horizontal flyback transformer, and horizontal deflection circuits, among other components. 

Why is my TV making a squeaking noise?

Squealing noises are often caused by loose windings or cores in power inductors or transformers and can be fixed by spraying the offending component with aerosol lacquer. If it happens while the set is OFF, it’s probably in the standby power supply.
 

How do I get my TV to stop squeaking?

The TV produces a high-pitched noise.

1. Change the channel or video input of the TV.
2. Turn off the TV.
3. Ensure that any audio or video components are connected to the TV properly.
4. Remove all third party audio or video components connected to the TV.
5. Unplug the TV power cord from the AC outlet.

Why is my TV making a weird noise?

If you hear a cracking or popping noise, it could be due to temperature changes. A buzzing, crackling, or humming noise could be caused by electrical feedback. Arranging the cables and making sure the TV has good ventilation will keep it quiet.