Our cooling fan seems to be making a loud noise. Any suggestions?
My HLN5065WX/XAA has a high pitched noise that varies in intensity from where you can barely hear to loud. It continues for a few seconds after the tv is turned off. Is this a fan problem or does a bulb make a sound before it goes out? Any help is appreciated.
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I had a camcorder do this same thing but it only did it when I used it at home , one day I took it to film the dogs at the park and it worked perfectly , it took me a lot of deep thought to finally figure out it was the Wi-Fi router that it was picking up at home and making noise on the audio track part , although mine was more of a fluttering sound, maybe yours is the same cause ? try to eliminate all sources of strong transmitters around it then see if it makes noise then !!
It likely isn't worth fixing because the repair will probably cost a minimum or $200 to $250 and a new 42" LCD at walmart.com is only $578. Do you want to put half of the cost of a new LCD into one that will still be out of warranty after you repair it?
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Sounds like the High Voltage section is shot. Probably a bad flyback transformer. This is the component that has the high voltage lead coming out of it. There is no high voltage to the tube and no picture as well. The horizontal output transistor is usually a suspect here as well if its shorted.
Hope this helps.