Our Advent TV is less than 4 years old. Yesterday when we turned it on a bright "lightning bolt" horizontal line, slightly curved appeared and stayed. Is it a fatal flatline? Is it worth being fixed, and if so, where is the closest service center (Killeen Texas area)? -bill taylor
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Re: horizontal line across middle
From your description, this is a loss of vertical deflection. There are some failed components in the vertical deflection amplifier. An experienced TV tech should be able to service the set. It would be best to send the set to the authorized service rep for your area.
If you run the set with this fault, the line will be burned in to the screen. It is best to not use the set in this type of condition.
As for the cost, the labour will most likely be the most expensive aspect of servicing your set. Ask for an estimate before accepting the repair.
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Failure of vertical scan output circuit. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. http://electronicshelponline.blogspot.com/
Type in this key phrase " my service table today " in the search box at the top right of the display window of the home page, to get gathered some pages which has the details of practical experiences to the author of that site.
The line is there because the vertical deflection unit - the one that spreads that line across the entire screen to form the image - has failed. Replacing it is a job for a professional, or at least an experienced amateur, and the parts will be quite difficult to find for such an old tv .
it could be an electrolytic capacitor or the vertical output I.C. in the vertical circuitry,if you remove the rear cover tap on the board in different places and see if the picture fills out or atleast jitters like it might fill out,then it could be just a cold solder joint,then remove the main board and resolder all joints and this should repair the condition you have
vertical output ic needs to be resoldered. careful leaving that bright line displayed on the screen as this will cause a permanent phosphor burn into the tube. this can not be corrected once burned unless you replace the tube. mch
This is cauced by a collaspe of the vertical output circuit. Normally a relatively easy/quick fix by a skilled repair tech. If you have a nice quality set that is less than 7 years old, it might be worth fixing, otherwise, you might want to consider getting a new one.
Give a call to a local service shop and tell them what TV you have and the problem and see what they provide for an estimate to repair, it might be worth doing and it might make your decision easier to go buy a new one.
Vertical defection failure. Common failure. Pretty easy to
repair ($50-75?). However, my general rule of thumb is not to
waste any more money on TVs over 10 years old. Too much other
stuff in there ready to fail as well.
this symptom, sometimes called the tube light effect, it is characterised by a bright thin horizontal line across the middle of the screen. this symptom is caused by a breakdown in the vertical deflection circuit. hence maybe the trouble maybe in the vertical oscillator, amplifier or output circuits. but if all i have said is not clear to you, better bring it to a qualified tv technician. good luck!