Across the top of my screen, and thick black line has developed. It started out about a half inch high, and is growing in size, expanding downward to about 2-3 inches now. It's pushing the top of the picture down, and the top half inch of the picture is distorted as well.
The picture itself isn't being chopped off as you watch it, but pushed downward.
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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...
top half missing is in vertical circuit of set---if it is a 27 inch and this old consider retiring it and replacing----other option is consider having a shop repair it--a rough guess would be as high as 150 dollars parts and labor is possible for your problems.
This is a problem with the vertical circuit and can be as simple as poor solder connections within that circuit or defective parts. If you have no experience with soldering or TVs, this should go to a service shop. Expect a parts cost in the $30-$40 range for and IC +/or capacitors. If you'd like to attempt this yourself, please supply the exact make and model so I can post the parts required along with additional instructions. Please note that TVs contain potentially dangerous high voltages even when unplugged.
hi there, you do have a vertical section problem and at the power supply section problem. do some test, check for some cold solder at the power supply section, test some electrolytic capacitor at the vertical section. ty
Open the TV amd turn it on in a position you can see the picture, possibly through a mirror. Now gently tap all of the metal heat sinks on the circuit board until you find the one that is sensitive it will have a small chip mounted vertically on it, with probably like 7-10 pins. The number on the chip will most likely be an "LA****" number. Now turn the circuit board (UNPLUG FIRST) over and resolder the pins. This is your problem 99% of the time. Be very careful there is High Voltage inside this TV.
Those lines sound like "retrace lines" and several things can cause them. The most common are shorts inside the picture tube and shorted semiconductors in the video driver circuits. They can also be seen if the blue screen voltage is too high or if someone has tampered with the screen voltage control.