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Loud whistling noise coming from tv speakers

My tv is making a whistling noise,the model is polaroid TLU-03711C it is only 2 years old

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A couple of things could make the tv chassis whistle
1 coud be dry solder joint probably on power capacitors
2 IF your tv has tube the board on the back could be making the noise its to do with the yoke on the way out!

Posted on Jul 13, 2009


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Polaroid TLU-03711C black turns red

Will most likely need a new main motherboard / video board. Parts are not always easy to get for equipment these days, but if you are able to lace the part it is usually a pretty easy repair job.

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I have 2 poloroid 37" (TLU-03711C) lcd tv's both

You seem to have a few possible problems with these TVs. I've fixed a few Polaroids and most seem to have similar problems. First off, you need to give a little bit more info about your problem.
If your TV's blue LED power light comes on, but you get no picture (a completely dark screen), this is likely a problem with your Power board. You can try looking for bad capacitors (bulging from either the top or bottom) or burn marks on the bottom of the board.
If you are tech savvy, you may want to use a multimeter and check voltages on the main transistors, but only do this if you have experience. Alternatively you could order a replacement power supply, but only do this if you are sure the power board is the only problem. has a variety of replacement parts for a reasonable price. You should be able to find your power board for $50-$100.
If you are getting absolutely no LEDs or lights at all when its plugged in, then you might have a blown fuse. The fuse is a small red/orange cylinder. If you had a surge, you could just replace the fuse, but if it happened under normal working conditions, most likely something is causing it and would cause it again, if you replaced the fuse.
Now in addition, your video board may have been damaged by a defective power board. If you experience odd problems like a scrambling screen, freezing, or weird color changes it may indicate a problem with the video board or it may just be the unstable power being supplied from the power board.
There is also a small possibility that one or more of the your backlights are not functioning properly. This is less likely, but still a possibility. In some cases its repairable, but if it requires a replacement of the LCD panel, then it's not worth it.
Anyways, hopefully that gives you some insight in possible problems.

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Polaroid TLU 03711C - HD LCD flatscreen TV 37

I wrote a guide on how to fix this problem. It's really easy to do and only costs £1 (about $1!). You can view, download and print the guide here -

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I have got a polaroid flat screen tv. model no. polaroid TLU 03711C. I have had this tv for less than a year, and it is still under warranty just. however over the last 4 months or so, when i first turn...

I had the same problem - It was due to these two tiny devices called "capacitors" which had blown. I replaced them (it only cost me £1!) and was really easy.
I wrote a guide on how to change the capacitors, there are pictures an d the guide is easy to follow. You can print, download or view the guide here -

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