My polarido 37in hd-lcd tv makes constant buzzing sound

Get the estimate. When your insurance company sees it, believe me, they won't buck at replacing your TV _especially since the prices of TV's have come down over the years while the quality and resolution has skyrocketed. . .

Without testing the tv all i can say is that, from your description, it can be only the T-con board or the ballast for the backlighting. Take a flashlight and point it at the screen from up close - if you see the image there it's the ballast, if you don't the t-con.
These are the boards
T-con http://buy.id.ebay.com/buying/id/display/110575838928_SVA-VR3718W-LCD-Controller-Board-Part--6870C0060F
Ballast http://goo.gl/SJkA6

It ur Vizio tv,The power supply board is the problems.The transformers in the power supply board have gaps in the transformers.The high voltage curents flow that make that buzzing noise.

you might need a new lamp, considering the age of the set, if there isn't any buzzing, constant clicking. You probably just need the lamp.

it sound like one of the drivers is going out, not much you can do with out service

mainboard is bad and needs replaced with the proper rev and firmware updates. questions, email me

How mant times the the led on the front of the set blinks? And how long do it stay on before it goes out?

I HAVE A RCA 50 HDTV DLP MODEL #D50LPW134 IT MAKE A BUZZING SOUND AND NO PICTURE i CHANGE THE BULB AND STILL NOT WORKING.

[email protected]

Ken

The TV is in some kind of protection mode, the blinking LED show you an error code.
Try pressing 062596 and then press menu button (do these in quick motion, don't let them to time out while keying)...see what happens
I also heard that this problem appeared with some people because the of the burnt fuse in the TV. To fix that it has to be taken to the tech shop.
And yes I also heard about this issue many times, seems like this TV set is very popular with this kind of problem.

Make sure you aren't in component mode and hagve plugged in and RCA cable(Yellow, Red, and White) look back behind the TV and unplug your cables and reconnect them into the Yellow Red and White ports. Then change the TV input to Composite(Press Source until it says comopsite on the top right). That should fix your problem.