42 inch lcd tv.its a rca. the screen is damaged. picture tube is out. how much will it cost?

There is no picture tube in a modern flat screen TV.
And unless it's physically broken, it's usually something else that has failed and not the screen.
A picture tube is a CRT (cathode ray tube) that sends electrons from the back to the front to light up different color phosphorous dots.
A modern flat screen TV on the other hand is LCD (liquid crystal display) that turns on and off to allow backlighting through multi colored filters. (LED TV also uses a LCD screen, the only difference is the backlighting is LED and not fluorescent lamps.)

LG 42LS5700 - LG.com

www.lg.com > Home > Support > Product Support

LG ElectronicsTV/Audio/Video; TVs; 42LS5700 ... TV Support Landing Page - HDTV/Netcast/webOS 1.0/webOS 2.0 ... Adjusting Picture Settings - webOS 2.0 Video ... quality and convenience of complimentary shipping when buying directly from LG.com. ... Curved TVs · 22 Inch to 29 Inch Class TVs · 32 Inch to 39 Inch Class TVs · 40 Inch ...

Amazon.com: Customer Reviews: LG 42LS5700 42-Inch ...

www.amazon.com/LG-42LS5700-42-Inch.../B006ZH...

Amazon.com, Inc.LG 42LS5700 42-Inch 1080p 120Hz LED-LCD HDTV with Smart TV (2012 Model). byLG. Size: 42-Inch ..... images are nice and crisp when viewing HD content.

Widescreen TV Black Screen - Repair LCD LED PLASMA ...

? 3:41
https://www.youtube.com/watch?v=RbZncfiOXQA
Jul 13, 2011 - Uploaded by FixItUrselfDummy
Fix your tv with black screen blinking light, popping sound noise. ... Watch QueueQueue ... TV Black Screen - Repair LCD LED PLASMA - Problems SONY LG .... I have a 60 inch samsung DPL tv how can I stop the humming or ... What do I do if my tvturns on but its just a black screen so sound no picture?.

If you've just bought it take i back as faulty

You would have damaged the LCD panel.You will have to change it for which you will need professional help and remember it will cost you 70% the cost of the TV itself. Sometimes its better to buy a new TV altogether because a new model will have better features and might cost only as much as the repair charges for the old TV.

Hello; The screen ( LCD Panel ) can be replaced. The only problem is it will cost near $1,000.00 for the LCD Panel alone. Time for a new set. John

Where do u live,which country is this? $52,000 i can buy a brand new car for this price.If the tv LCD screen panel is damage or broken.The tv is useless,only can,must be replace it with another LCD screen panel,the tv screen panel are 90% important to the tv.30% of the cost of the tv to replaced the LCD screen panel is fair.U don't take the offer,the tv LCD screen panel is damage or broken,will not able to buy and replace by any other tv shops technichains.The LCD screen panels are limited production by the tv corporation.

dear friend the picture tube in your t.v is damaged that's why

The most likely the tv has a power supply related problem. The most common thing to go out is the circuit board that supply power to the screen. Commonly called a Backlight Inverter Board.
I can't say it's 100% the problem because I can't actually look at the tv over the internet.
If the TV is still under warranty, go that route.
If not under warranty and If you have some electronic experience, you can purchase a Service Manual over the internet and diagnose the source of the problem and fix it by soldering in the new part. The Service Manual will give you circuit diagrams, test points, and part# lists. Usually, cost under $20.

I hope I shed some light on the subject for you.

damaged lcd screen are not repaireable but are replacable. mostly expensive depending on its size. handling, shipping or transporting units with lcd such as plasma tvs should be given extra care.

You can have them repaired using a TV Repair guy but often it costs as much as a brand new tv. My daughter broke my $1,600 LCD. It would have cost $1,200 to fix.. so I just bought a new one.After that I picked up a TV screen protector called TV Armor http://www.tv-armor.com Its designed to protect the TV from damage. Now I dont have to worry anymore when she is playing near it. It works really well.

Eric