Who's the TV repair person around here?

[TPCDrafting]

We've got a 36" flat screen (not flat panel) that has acquired a high pitch squeel that lasts several minutes when we turn it on. We don't watch much as we only get 3 channels out here beyond the sticks, but we do like to watch DVD's. It makes the sound whether the audio is on or if it's muted. Sometimes it helps to turn the power on and off a few times, but lately we've just turned it on a 1/2 hour or so before we turn on a movie. I think it might have something to do with all the lightening we had this past summer. I don't think the house was directly hit as nothing else seems to be damaged. It along with all my other major electronics are on battery backup surge protectors, but the one for our TV is a long way from top -o- the line. The TV is a Sharp brand and I can look up the model number if that would help anything. Any ideas?

 

[JApol]

If its a tube flat screen it might be the capacitors charging up again. A 36" tube takes quite a bit of jiuce to get jump started. Put some compressed air through the back of it, you might have a couple generations of dust bunnies camping in the back.

 

[fkovalski]

Hey Tim-



I won't comment as to what your TV issue is, but the compressed air is a good idea, HOWEVER... . if I know the gearheads on this site (not that you're one :-laf ) you might not want to use the high pressure, super duper, turbo, high volume, mega hyper mother of all compressors. A can of air will do

 

[TPCDrafting]

Ya mean like the one I use to blow the cookie crumbs out of my keyboard? I know what yer talkin' about, I was thinking the same thing. Thanks for the advice, I'll report back. I just didn't wanna call a tv repairman and have him drive way out here to do something simple like that, then charge me $$$. That and I didn't want to carry that thing anywhere, it weighs a bunch.

 

[wyosteve]

Tim, I think someone may have removed your silencer ring!!

 

[TPCDrafting]

I wish the sound was that sweet. It's that migrane inducing sound, kinda like right after I shoot the 7 mag without ear plugs.

 

[tp0d]

Sounds like your high voltage transformer may be on its way out. When one or more wraps in the coil burn out or fuse, it unstabilizes the voltage and the tube draws a higher amperage, causing a more intense noise. It goes away when the coil heats up. You could also have blown a cap in the power supply circuit, and the others are taking up slack. Modern electronics are crap anymore.



A tv shop would be a good bet, but it aint gonna be cheap, prolly a new main board.



good luck



-j

 

[JApol]

I see a 50" LCD in your future Oo.