Question about Panasonic CT-27G23 27" TV

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Horizontal Line Hello, the problem this TV is having is that when I turn it on all I see is a horizontal line. The sound still works and I can see colors, but that it.

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  • Jonathan Whitehead Apr 23, 2006

    So how do you fix it?

  • Alvin Purple Sep 29, 2008

    I have a similar horizontal line problem with a Panasonic CT-31G30T 31" TV. Tapping the side of the set and the horizontal would come and go. Did a sweep of the solder connections and now there is no picture and occaisionally only a horizontal line when tapping the side of the set. Suspect a faulty Cap or Transformer but I am not sure what I should replace first. Please advise.

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  • Master
  • 3,130 Answers

You have a vert sweep problem. Probably the vertical output Ic the B+ going to the vert out IC or in rare cases the deflection yolk could be bad but not likly.

Posted on Apr 23, 2006

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Where is horizontal scan out put section?


Hi Majid
Just contact any service technician to repair your TV. It will be best for you.
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Hi.. Mine is a sansui tv and I bought it 3 years back. Now it is showing a horizontal line on the screen. Sound is fine but I can't see the picture, I just see one white horizontal line on tv...


The problem is vertical failure. Vertical output section to your TV ahs the fault. You ahve to check the vertcial output circuit for any component failure or loose solderings.

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Horizontal line WITH SOUND is only vertical output stage problem.horizontal line without sound is osc problem.So kindly verfy that.If h line with sound then
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No picture on my tv and it has a horizontal line mid screen


either your vertical driver or output circuit capacitor(s) defective, try this remove rear cover and with something insulated like a straw prod and poke around the circuit board,sometimes theres a cold solder joint, if picture starts to expand on screen its a solder joint

Oct 18, 2009 | Televison & Video

1 Answer

Ps 27123 have sound, tuning etc only small horizontal color band


Hello bdedrick708,

If what you are trying to say is that you have a 1/4 inch horizontal line across your screen, this means that something in your vertical deflection circuit has failed. This could be the vertical oscillator, the vertical output processor, the vertical coupling capacitor, or the vertical section of the yoke transformer.

If what you are talking about is a vertical line from top to bottom then you are possibly talking about a failed horizontal section of the yoke transformer.

Why so little about the horizontal section of the yoke? That is because if the horizontal section fails completely then you would lose high voltage and no line would be present because you would not have raster (screen light).

In any even check the yoke transformer first. Then work back from there.

I hope this helps,

Thank you,

Shuttle83

llc.com/">http://www.electron-age-technologies-llc.com

Feb 07, 2009 | Proscan PS27123 TV

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Black screen with sound only no picture.


I have same problem,it appears to be the flyback
xfr.

Apr 18, 2008 | Hitachi 32UDX10S 32" TV

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Toshiba TV CX2789K Horizontal Line


Failure in the vertical deflection amplifier section. This is usualy from failed components, and sometimes cold solder connections. Most of the time, I found bad capacitors, and sometimes the output IC or transistors (depending on the model type) that have failed.

Take the set to a service center for an estimate. You may find it more feasible to buy a new set depending on the parts that failed and the time involved to do the work.

Jerry G.

Apr 14, 2008 | Televison & Video

1 Answer

Tv not showing a picture


Hello e26pitts,

If the line is horizontal then it could be a problem in your vertical deflection section, if the line is vertical then the problem is in your horizontal deflection section. Now for a little more detail.

If Horizontal line is present the vertical section of the yoke transformer is nit responding to current flowing through it due to being open, or the vertical coupling capacitor is open, or even the vertical drive transistor might be defective.

If Vertical line is present the horizontal section of the yoke transformer might be bad. Now this gets kind is easy in a way, because the yoke would be the sole cause of your problem here (maybe there is some circuitry doing some horizontal coupling check that to) because the horizontal section controls other functions that would also respond if this were a horizontal drive issue. In any event these problems should be checked by a qualified TV technician, I would suggest that you take the TV to a repair shop to have it worked on.

I hope this helps
Thank you,
Shuttle83

Mar 21, 2008 | Televison & Video

1 Answer

Lines on tv


Set starts, horizontal and vertical deflection work, HT ok, crt heaters ok, but no sound or picture
I turned the G2 voltage up and noticed a white screen with flyback lines, frame ok. I detected two badly soldered double diode rectifiers in the secondary part of the power supply ! I checked all other joints, and everything was ok !! success
White horizontal line (no vertical deflection)
Check / replace R548, R549
Sound but no picture except for a couple of horizontal colour lines
Replaced the frame chip TDA8356, set now ok

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