My TV is buzzing nonstop. What will fix this??

Main system control IC fault. Contact any service technician. If you wish to get some details; check the site linked here. Viewing it in "Mosaic" will make surf easy. Surf the site with patience. Pull up older posts.
http://electronicshelponline.blogspot.com/

had a dell that does the same, tried many fixes. finally just replaced the monitor. easiest and most cost effective fix, in my opinion

Samsung states - A buzzing sound from your plasma TV is normal. It is caused by the electrical charges used to create the images on the screen. The buzzing, however, should not be so loud that you can hear it when the volume on the TV is set at normal levels.It is also important to determine the type of buzzing sound. A sound like a ground hum is completely normal. This buzzing can originate near the power cord connection or from the SMPS board position on the upper back of the TV. The buzz will be more audible as contrast increases on the screen, most notably when displaying an all white screen. If the buzzing sound is loud, you may have the Contrast set too high. Lower the contrast to reduce or eliminate the buzzing.You may also have loud buzzing if the rear of your Plasma TV is too close to a wall or other hard surface. Try moving your TV away from the wall until the buzzing is minimized. [1]
If the buzzing is at a higher frequency and resembles a crackling sound (like the sound of Velcro being pulled apart), and originates from the upper middle back of the TV, you likely have a failing SMPS board. Place a support call with Samsung to have the SMPS board replaced.FP-T5084 Have a known buzzing problem with a very simple fix.If the buzzing is coming from the left or right sides of the rear and the volume can be changed by pressing lightly on those locations, you are probably hearing the vibration of the grounding springs on the back panel. Call Samsung (or whoever) and have a technician confirm the problem. The easiest fix is to insulate the offending spring by applying some felt tape.

Vizio makes an ok LCD, but if you notice they no longer make plasma. they stopped last year. Anyways. the buzzing sound is semi serious, it sounds as though you have a capacitor leaking. It is best to get it fixed before it goes out all the way, with it buzzing it will be easier to identify. Best of luck

i fixed one by put 2 new caps in c112 and c113 1000uf 10v

Sounds to me like the high voltage power supply is attempting to fire off the metal halide lamp without success.

Personally, I think your CPU is to far to come back. I'd trade it in.

tv makes a buzzing sound when i turn on the set, than stops.

1)pull chassis-solder any/all bad connects. 2)Replace shorted horiz o/p xistor #237470 and IHVT #257805 or Asti 2078

Hi, heres your fix, very common problem usually caused (but not always) by using windex to clean the screen, replace the front control boards tact switches, replace all of them, part number is 23344443, end of problem :) BMW Rider