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My picture tube just reduced itself to a thin line running across the width of the set.

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Its a vertical ic failure.sometimes if its a loose connection on the ic itself if you tap on the side of the set the picture will open again interminttently. but id the ic its bad nothing is going to happen till you replace it and sometimes it will take a fuse resistor with it and a couple of capacitors as well depending on brand , model and year set was made.

Posted on Jul 10, 2008

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Thin blue lines across the screen.6or 8 of them 3 or 4 inches apart. everything else works great still perfect picture


You need to turn down the Blue Screen Drive control a notch, Blue tube has built up higher then R/G over Driving.

Sep 27, 2010 | Sony Grand WEGA KDP-65WS550 65" Rear...

4 Answers

I have a 27 inch panasonic and have about 19 real thin lines across the top of the screen. It is in the top 4 inches of the picture tube.Model CT-2701G Built 9/03


Scan coils (field) measure about 5 to 15 Ohms from the plug where they connect to the main PCB
Look for the cables that come down from the scan coils (deflection yoke) to the main pcb
its either two cables and two plugs or a 4way cable with one plug to the main pcb
2 of the wires goto the vertical(height) and 2 to the width
try to work it out which (the fattest wire is width)
The width ones go towards the loptx(line output/flyback transformer),
and the height ones go to the field output chip (or transistor pair) Follow the printed circuit from the plug and look for a 7 or 9 pin chip on a cooling plate(heat sink for the posh),
it should have a diode connected to it and about 25v on both ends of the diode.
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Jul 14, 2008 | Projection Televisions

1 Answer

Thin red line, green line and yellow line going across the screen


the problem is vertical collapse,i am not so sure you can trouble shoot this on your own but you can send the board to eithor pts electronics or tristate module for repair
to get a price get the number off the sticker--left hand board(looking from the back) it will start CTC195---- write down entire number before you call them

Sep 02, 2009 | RCA P52926 52" Rear Projection Television

1 Answer

Red line across top/blue line across bottom of screen


Adjust your convergence. Under menu I think its the last choice at the bottom of settings or picture menu

May 05, 2009 | Sony KDF-50E2000 50" HDTV

2 Answers

Panasonic PT-47X54J Not working


I can't tell you how to fix this set, but I can tell you that its not a "lamp" issue as this doesn't have a lamp. Its a 3 picture tube projection TV. the three tubes are in a red green blue format, and average about $175 for each one, not including the labor to install them. your problem, may not be the tube, but just a power supply problem, but there is a chance it is.

Nov 21, 2008 | Panasonic PT-47X54 47" Rear Projection...

1 Answer

Mitsubishi VS-60705 Large Screen Projection


thanks for your detailed description of what happened.
replacing the vertical output i.c will correct the problem.
the reason it failed was bad connections on it.

Apr 22, 2008 | Mitsubishi VS-45605 50" Rear Projection...

1 Answer

Thin red horizontal lines across screen


replace the focus block or try to adjust the screen control on the focus block for red only. this will affect the white balance of the set so adjust it carefully. the focus block is located on the front inside the set. remove the speaker cover then the 4 screws on the front plate. the focus block is 3" x 2" black box with 6 adjustment posts three for focus and three for screen. adjust only the affected screen (R).

Mar 13, 2008 | Sony Grand WEGA KDP-57XBR2 57" Rear...

1 Answer

Vertical lines problem


On your blue tube there is a crt broad that may have a bad capacitor 4.7uf 250 volts most likely it can be leaky not able to hold correct charge also it might have video ic on same broard breaking down, this will cause your problem unplug crt broad from bottom neck of tube turn set on see if problem goes away if so then it means you have problem with crt broad or it could be your tube.Hope this helps you out!

Jan 18, 2008 | JVC HD-52Z575 52" Rear Projection...

2 Answers

PT-47WX, Blue streaks across the screen?


It is not a bulb. It is a picture tube. If there are thin blue lines across the entire screen, not just the edges, and the picture itself looks too blue, it means that the blue picture tube is being driven too hard. This could be because the blue screen voltage is too high, the boost voltage on the blue picture tube is too low, or the video output is leaky or shorted. If the picture has what looks like blue arcs and double images on one or more sides of the picture, it means that one of your convergence IC's has burned out and needs to be replaced. These are things that should be tested and serviced by a qualified tech, so allow an experienced tech to handle it for you.

Sep 07, 2007 | Panasonic PT-47WX49 47" Rear Projection...

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