Riddled TV Repair Forum

jsk2008 · Joined: 03 Aug 2009 Posts: 2

I have a 37" Magnavox lcd widescreen hdtv, model 37MF321D/37. My problem is that the tv makes a loud whine/whistle noise that comes from a distinct area on the back of the tv. The whine becomes louder when the screen produces a brighter(higher contrast) picture and softer when it gets darker(changing channel, dark scenes).I know it's not entirely the speakers because the noise is still present after disconnecting them. However, although the speakers do not produce the sound, it does amplify the noise much louder than what the tv normally produces(when i mute the speakers the sound is still present, but not as loud).I currently have my tv cable, xbox 360 and pc hooked up to the tv. The whine is unbearable when watching tv or playing on the xbox, but is not noticeable when on the computer. Since the computer has its own speakers, the noise is not amplified through them.

The tv has been like this for almost a year now and I'm starting to go crazy. I would like to know what the problem is, is it easily fixable,and generally how much it would cost me to get it fixed. It cost me around $800 about 3 years ago, so is it worth it to get a new TV or try to fix it?

Google

Jesse Mack · Joined: 22 May 2008 Posts: 600 Location: The Last Frontier

High probability that one of the inverter transformers is singing.

CAUTION, touching one of the inverter transformers while the set is on will get you PAIN.

While the set is running use an insulated non-metalic probe and touch each transformer. If you touch a transformer and the singing stops you have found the problem. Excepting of course the transformer is usually not available seperately.

Hope this helps.

Jesse

jsk2008 · Joined: 03 Aug 2009 Posts: 2

thanks for the reply, many people have suggested the same problem on different forums. I guess ill get a buddy of mine to check it out.