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Re: Panasonic CTV TC-20V50P

Vertical line dispaly, screen on plyback is already adjust.. what would be posible.. tnx

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Re: Re: Panasonic CTV TC-20V50P

Hi, Possibly an open resistor in the 100 Mega Ohms range (On some models as high as 470M). Either in series or parallel to ground of the G1, G2 or Screen supply. This would normally be in the PCB at the rear/neck of the picture tube. Of course, it is also possible that the Screen adjustment or the FBT itself is already faulty. Hope this be of some help. Good luck and kind regards.

Posted on Oct 08, 2007

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How do you adjust the vertical lines going across my screen?

The vertical deflection circuit of your tv has a problem.
First, try to replace the vertical ic. This ic can be found near the plyback or horizontal section. It is a linear ic with heatsink.
If nothing happens after replacing the ic, replace all the polarized capacitor near the ic and resolder the components at the vertical section.

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Have you recently replaced its Line Output Transformer [LOT]?. If so have you replaced it with same type and number? Verical bars are due to LOT to Deflection Yoke mismatching. It is known as "Yoke Rigging" technically. Replacing the vertical Ic won't help in this problem . If you have replaced the LOT, the replaced one is not orginal. Ok

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No picture with sound

check the tail end of the picture tube do you see a light on it?that is the heater of the picture.without it your screen will be black. If there is no light from the heater there should be an open resistor connected to he heater replace them. .next check the screen adjustment of your plyback.screen adjustment is right in the body of the plyback there are 2 adjustment in there the upper is the focus adjustment and the lower is the screen adjustment turn it clockwise untill you reach the preferred adjustment.. tnx

please rate my help

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1 Answer

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2 Answers

When turned on you view only a vertical line. i beleave a power surge caused this. what part or parts do i need to replace. mod no-ps35123. tnank you

There is no vertical chip in this model/ ctc 169.
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It's either the yoke wires on neck of the tube have
become de-soldered or the more likely possibility
is the viliot / white wire from the yoke have simply
become de-soldered if you first re-solder those two
wire chances are good you will restore full picturerepairtech99.jpg

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1 Answer

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1 Answer

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