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Tv fault nec fs-6390 with no vertical deflection

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Vertical Output IC, 2.2 ohm feed resistor @ diode

Posted on Jul 26, 2008

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6ya6ya
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Posted on Jan 02, 2017

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Tv cuts right off when i turn it on


projection TV`s have integrated protection circuits
built into the circuit design, these circuits turn the
power off automatically when a fault has bin detected this
is in order to prevent a more costly repair, these circuits monitor
power supply , vertical and horizontal deflection
over voltage, or x ray, and also faults with convergence circuits.
Diagnosing these faults require test equipment and a good knowledge of
electronic repair techniques, and also a repair manual.

Apr 28, 2010 | RCA MM52110 52" Rear Projection HDTV-Ready...

1 Answer

Tv won't turn on, even if I push the reset button


projection TV`s have integrated protection circuits
built into the circuit design, these circuits turn the
power off automatically when a fault has bin detected this
is in order to prevent a more costly repair, these circuits monitor
power supply , vertical and horizontal deflection
over voltage, or x ray, and also faults with convergence circuits.
Diagnosing these faults require test equipment and a good knowledge of
electronic repair techniques, and also a repair manual.

Apr 28, 2010 | Mitsubishi WS-55711 55" Rear Projection...

1 Answer

Out of nowhere my tv went blank..what could had caused it?


projection TV`s have integrated protection circuits
built into the circuit design, these circuits turn the
power off automatically when a fault has bin detected this
is in order to prevent a more costly repair, these circuits monitor
power supply , vertical and horizontal deflection
over voltage, or x ray, and also faults with convergence circuits.
Diagnosing these faults require test equipment and a good knowledge of
electronic repair techniques, and also a repair manual.

Apr 28, 2010 | Sony Grand WEGA KDP-65XBR2 65" Rear...

1 Answer

D61W20 61 in. Rear Projection Television: turn on tv ligt blinks 3 times and goes out....


projection TV`s have integrated protection circuits
built into the circuit design, these circuits turn the
power off automatically when a fault has bin detected this
is in order to prevent a more costly repair, these circuits monitor
power supply , vertical and horizontal deflection
over voltage, or x ray, and also faults with convergence circuits.
Diagnosing these faults require test equipment and a good knowledge of
electronic repair techniques, and also a repair manual.

Apr 28, 2010 | Televison & Video

1 Answer

The picture on my TS-4573 rear projection tv has started to roll vertically at a fast rate. How can I make this stop. On old tv's there was a vertical hold adjustment on the back that you could play with...


this fault is caused by defective electrolytic capacitors in the vertical deflection circuits, they need to be changed out, do this before it causes more problems, there are no adjustments for this anymore.

Jan 30, 2010 | Televison & Video

1 Answer

My tv keeps changing picture size


Does it change height? If so that is the problem with the vertical deflection. It is very rare for the picture to change in width since the is the horizontal deflection circuit, which also provides power, and instead of width problem you would have a dead TV. lol
Ok your problem is with the vertical deflection I assume. The cause could be a bad capacitor, The vertical output amplifier, or just a simple bad solder connection. If you want to know how to fix it let me know, but I have to say it is not that easy. In technicality I would rate it 8 out of ten.

Aug 12, 2009 | Mitsubishi Televison & Video

1 Answer

Screen shrinkage


The vertical shrinkage is a fault in the vertical deflection circuit, suggest replacing capacitors around that area along with a vertical output IC. I can provide more info if you've got some electronics experience and going to try and tackle it.

May 18, 2009 | Zenith Televison & Video

1 Answer

My tv is all blackexcept a wihite line through it and no sound


If the line is going across the TV the vertical deflection circuit needs repair. If its going from top to bottom the horizontal circuits are needing repair. Please post your model number and I will be better equiped to let you know which part is likely at fault.

Apr 27, 2008 | Televison & Video

1 Answer

My tv has this lines that bend over the front top of the screen and when an object moves through the lines the image appers from the the top of where the line begins...and the tv goes black every once and...


This sounds like a vertical deflection fault. There are some components that are failing in the vertical deflection area that are starting to fail. It is very common in many of the sets that there are electrolytic capacitors in the vertical amp section that are gong out of specifications.

When you have at the top or the bottom of the screen where the vertical axis is compressed, and the picture in the compressed area looks like it is inverted and going over on itself, this is called "vertical fold-over".

An experienced TV service technician should be able to service this for you.


Jerry G.

Apr 18, 2008 | Televison & Video

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