Question about JVC LT-42E488 Television

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Thick, jagged black line across center of screen

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IF the screen isn't cracked and under warrenty, take it to the company you purchased it from.

Posted on Oct 21, 2013

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Split screen, kind of inverted w/white wavy lines


It is a calibration problem, let me see if I can find some schematics for your tv.

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I turn on my tv when i came from school and my tv has a black thick line across the top of the screen, how do I fix it?


The virticle hold is beginning to fail on your TV. This is caused by a capacitor which over time has gotten hot and is loosing its value in capacitance. It is part of a circuit which drives the verticle hold circuit, so it regulates how tall the picture is. It will eventually shrink into a single line in the center of your screen if it is not replaced.

The bad news is that if you do not feel secure in soldering a component on your TV's board, you will need to pay to have it done.. It might be time to get a new TV in other words. The point is that if that cap is failing, the others are not far behind, because the inside of the old TVs gets kind of hot and drys out the capacitors as they age that way...

Jan 08, 2015 | Televison & Video

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Screen only has black thick line across it


this usually means the lcd screen is broken. Black lines equals black pixels which means they're not connected. Warranty repair.

Oct 06, 2014 | Canon Cameras

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A horizontal thin black line has appeared across screen.


hi all .ive had the same problem,a thick black line down screen.sometimes it flickers from top to bottom and other permantly in view.but i have solved it.forget your ic boards and taking apart tv.have you got either a ps3 or wii connected to tv.if so unplug power lead from socket and relocate in seperate socket.make sure the lead is completely free of any other leads and you might just find this works.i think the power lead creates some sort of frequency that the tv picks up .good luck hope it works

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My monitor goes black with a horz white line across the center. It is a Lacie on a g4 mac . It is about 6 years. old.


The lcd is bad usually the lines start very small and rapidly over time become about an inch or so thick.

Oct 07, 2009 | Computers & Internet

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There is a thick black bar across my screen. What


The thick bar you are seeing could be a couple of things - either your HDMI or any other wire your connecting has been run too close to electrical lines, or your cable incoming needs to be grounded and/or filtered. It could also be a defect in the TV - does it happen when the DVD is on as well?

Total Control Remotes - www.totalcontrolremotes.com is a good place to contact to help you with these kinds of isssues.

Sep 06, 2009 | Televison & Video

1 Answer

Wii Controller into TV - - Very Bad


An LCD TV, from front to back, consists of these layers:

protective film - <1mm thick
liquid crystal cells - <1mm thick
charge screen - <1mm thick
backlight panel - 5-10mm thick
metal heat spreader - 2-5cm thick
controller board - 1mm thick

Your son most likely damaged the liquid crystal cells...

Unfortunately unlike normal TVs these are precision assembled, and there isn't much you can do to fix it.

It is possible to replace the screen, but it involves replacing the entire unit, from protective screen right to controller board. In other words, almost everything except the plastic case.

Unfortunately I think the tv is busted permanently, and it will cost more to repair than to replace.

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1 Answer

LCD screen dark and jagged lines


my nikon D80 did the same thing, had to replace the LCD. Their screens are very pedantic and screw up for no apparent reason, they also dont have as much shock resistance as the rest of the camera, as Ive learnt from expensive previous experiences....

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