Hissing noise from inside tv?? Is it gonna be expensive?

titewad_2

My son's tv in his bedroom ( Sharp 28LF-92H if it makes any difference)has recently developed a hissing sound.I initially thought it was the speakers until I listened more closely.It is definately coming from inside.So I took the back off to investigate and see if I could see anything obviously wrong.Not that I know what I am looking for,but everything seems to be connected.While fiddling I noticed that the noise will temporarily cease if i flex the curcuit board at the bottom.The noise seems to be coming from the centre of the internals,directly below the bulbous back of the screen.Best description of the noise is something like air and water escaping from a radiator.Has anyone any idea what this could be and whether it is likely to be expensive to fix.Is it something I could do myself?

The_JinJ

Guessing a component about to fail...BUT beware of high voltage in that telly...even when unplugged!!!

Bongedone

God damn snakes in a TV. You better call Samual L Jackson.

letsbehonest

It sounds like EHT line whistle (an electronic term) which is a high pitched noise given off by the line output transformer (another electronic term) nothing to worry about, if it gets to annoying dump it and buy a new tv the repair cost would probably be to costly.