My tv hums continuously when turned on .is there a setting problem ,age problem?
I hae a 61" TV and we just replaced the lamp thinking it was the problem, but there is a loud humming sound even when i mute.
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this sounds like you are having flyback problems. i have had a set that did this and i found that my flyback had arced a hole in my board. this is a high voltage situation if that is your problem. please allow a service tech check it out.
Annebatiste: Humming almost always comes from DC supply problems.A leaky SCR [silicon control recitfiter] transistor [used in a/c to dc power supply], leaky Capacitor [large metal type for heavy voltage\current], bad or value changed bias for SCR transistor, value changed filter resistor and loose transformer[Xformer] that the coils INSIDE vibrate sending a radio frequency [R\F] SIGNAL (like a radio station) into the audio amp section or right into the speakers causing the hum. Check entire power supply, all filter capacitors, coils, chokes ,transformers (somtimes used to push signal into speakers)
There is a coil in the set with a magnet glued to it, called the horizontal linearity coil. Sometimes the coil "sings", making a squeeling sound. I have seen this many times, and there really isnt anything actually electrically wrong with the set. To stop the squeeling the coil should be replaced.