Question about Panasonic CT-27G22 TV

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Horizontal Line Hi, um when I turn this television on all I get is a horizontal line,and the color that I get depends on what is being displayed. Like if I'm watching a tv program then all i get is a brown or blue color or whatever. But the sound works just fine. Could you guys help me out please.

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Your problem is called a vertical sweep problem and is caused by a defective vertical output IC,a bad vertical output coupler capacitor, and/or the b+ from the flyback transformer feed resistor and the filter capacitor. You get a schematic and post it here and I'll show you what parts are the most common in this chassis. You can get a service manual from Sams photo Facts on line and downloadable. Good luck

Posted on Apr 23, 2006


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Pink/Blue horizontal line on TV

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The vertical deflection circuit has failed, or has been shut down by a service code entered from the remote control*. Usually you can get out of service mode by turning the set off and on again.

*Normally, you have to enter a special combination of front panel and remote control codes to get into service mode, then enter another code on the remote control to get the horizontal line. The horizontal line is used for adjusting the screen controls for each color so you get proper color in the dark areas of the picture.

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Appreciate the "Ask Me".

I am assuming that you have more than just familiarity with electronic components and circuitry, the use of a DVM and a soldering iron. Further, that you have access to a service manual.

Width problem is basically insufficient horizontal deflection, then analysis would have to be in the horizontal section. Areas to initially focus on:
  1. 12V line and pin 29 of IC401;
  2. 110 V peak to peak at collector of Q403, if yes check Q 402 & 404 as well as T401;
  3. other components that affect the horizontal size are:
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  • Q 405, 406, 407 & 408;
  • D409
  • L401
Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards. Thank you for using FixYa.

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