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Sylvania vertical deflection problem

I simply want an estimate or range of the expense associated with fixing a vertical deflection problem on a 3 year old sylvania television. we used the television for about 2.5 years when the picture was reduced to a single horizontal line. I cant afford to spend a lot....but when i called the tv repair place, no estimate could be given. (they refused to give an estimate without seeing the TV). thanks!

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Re: sylvania vertical deflection problem

I don`t know where you live and it makes a BIG difference, the cost of doing business is waaay more in NYC than Peoria. At my shop if you brought it in, approximately $110 plus tax (6% here in Fl.) I`m basing this on the fact it needs the output IC, you may not need the IC it`s possible the 26 volt line is missing to the IC but you asked for a generic guess and that`s what it would cost you here, remember: Big City means big rent which means much higher bill, I`m in a little town in western Fl. hope this answers your question, good luck

Posted on Nov 28, 2007

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The quote is the one that seems to be a bit high, instead of getting this TV fix; I would save that money to buy another TV.
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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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1 Answer

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I know your problem for sure. If the fine line you are seeing is horizontal, you have a bad capacitor (or cold solder joint) in the "vertical deflection" circuits. Look for four of the largest wires coming from the picture tube and follow them down to the circuit board. These wires do NOT come out of the BACK of the tube, where most of the wires come from, but rather come sort of from the side of the tube. Two of them will go down to the board near the largest component on your board known as the "flyback transformer". Disregard these two and follow the other two. They will go near either two transistors or a vertical deflection chip. The board will normally be labeled "vertical" or vertical deflection near these transistors. There will be two or more capacitors very near these transistors. Look at them on the underside of the board and look for a bad solder joint. Push on the capacitors left and right while observing the underside of the board and you might be able to see the bad joint. If it is a chip instead of transistors, you could still have a bad capacitor or cold solder joint, but in most cases if it's a chip, then the chip is bad. Since, however, you can tap on the tv and make it work temporarily, this tells me that you probably have two vertical deflection transistors with associated capacitors. If the caps are good and no cold joints, then replace the transistors. This part of your tv is what pulls the electron beam up and down vertically and is thus called the vertical deflection circuits. With no vertical deflection, then the beam just moves left and right and never moves up and down. The picture is still there, but it is contained inside the fine line where of course you cannot see it. The parts in this circuit are not expensive at all. Keever

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