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The image on a CRT TV is produced by a beam of electrons which is controlled by a magnetic field to move the beam top to bottom and left to right. A single line suggests that the vertical deflection is working but not the horizontal deflection (left to right). There are a number of components associated with this and requires a competent TV repair engineer to fix. Better to to buy a new TV!
TURN IT OFF AND DO NOT TRY TO USE---if a thin line left to right in middle of screen it is vertical problem---the set should shut down but even seconds count here--this can burn a mark on all three picture tubes instantly and it is permanent.
Problem if small line left to right in vertical circuit.
Let me know what you know and I will try to help--I know these sets very well.
if line is left to right in middle of screen the problem is in the Vertical deflection circuit---could be either a soldering problem with the vertical output ic or a bad part in that circuit. If this has been helpful please give me a vote.
If the set is still in warranty, call for warranty service. If not and you feel comfortable working on the set, carefully open up the back and reseat all of hte cables and connectors. This can be caused by marginal connections inside the set.
anyone experiencing this problem should get in touch with Dave at email@example.com . he sold me a fix for this problem, for much less than the $400-$500 we were told it would cost to fix it. Dave not only solved the problem but provided the best customer service and support I have ever received. ABSOLUTLY the best money I ever spent, saved my T.V. Get in touch with the confidence of knowing he will help you as he did me. Thanks again Dave!!!
A LINE left / right thru the middle ( horiz line) indicates a problem in the vertical circuit.First step is to solder the pins of vertical o/p
IC.........Next, troubleshoot vertical circuit to look for problem...T.
These black lines on the plasma screens are very fixable. There is a dry solder joint on a circuit board at the bottom of the plasma that needs resoldered. There are 6 or 7 "ribbons" along the bottom of the screen that correspond to vertical sections of the display, so you just follow the black vertical line down to figure out which one is faulty. I just performed this fix successfully on my first attempt on a Gateway plasma, but it will work on most plasma's, specifically Hitachi, gateway, LG, Hyundai, & Akai. I think they may all have LG boards, my gateway did.
I can't really describe very well what to do, but I assure you it is fixable. If anyone is near nashville, I might be able to help you out. My email is firstname.lastname@example.org.
The set has a vertical problem if the line you mention is from side to side ,if the line is from top to bottom the problem is in the horizontal circuit and both can be repairable,a vertical fairlure is a common problem,the vertical IC goes bad and it takes a safety resistor with him to prevent any more damage,the horizontal is rare but it happens too,if you are familiar with tv service you can change the IC but you will need a service manual to identify the part,you can get a manual overnight if you downloaded it at www.servicemanuals.net,if you are not too familiar you should seek the help of a servicer for safety reasons.Let Us know how it goes or if you need more information.