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Toshiba theatreview While the set was on, it "popped" and the picture went dark, with a red horizontal line across the screen a little below the mid point.  The line appears to be four or five thin lines close to each other.  For about two weeks prior to this, the picture had occasionally had red "ghost" images. The erroneous red images began appearing when the cable company installed a new converter box with DVR.  We thought the box was faulty.  The connection to the coax cable was broken out of the back of the case during this installation.  The new box does not use the coax.

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Re: toshiba theatreview

Sounds like vertical problem maybe bad solder connections on vertical ic check and get back to me

Posted on Nov 03, 2007

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Television is a Tosiba DLP 72HM195

your tv needs a y-load board its like a grafix card as computers have due to overheating the board components are affected this is a manufacturing fault it tends to happen with samsung aswell

Feb 22, 2012 | Toshiba 72HM195 72" HDTV

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Horizontal blue lines with a slight blue wash in the screen

Its because of Over Voltage of Screen (G2) to Blue CRT.
Take off front lower cover (speaker grill) and unscrew board. There you will need to find Focus Block mounted having 6 control knobs. 3 knobs are for Focus control and 3 are for Screen volts control. Find Blue Screen control knob and turn is Counter Click Wise slightly until bluish shade disappear on screen including few blue horizontal lines.
If you select AV input to adjust that will be fine as you do not need to wait for dark-scene.

Apr 09, 2009 | Sony KP-65WS500 65" Rear Projection...

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Toshiba 52WM48 - Dark line across top of screen about 4 inches

replace the vertical ic, LA 7833 and four capacitors near it, i encountered this last two days.change the parts and it ok now.
cost of this parts is about $20.00

Jan 22, 2009 | Toshiba 42H83 42" Rear Projection...

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Toshiba 50H81 projection television

Projection sets have two very common problems.

The first common problem is convergence

These sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the picture to look normal. This is called convergence.

When its out of alignment the video will look 3-D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired. Convergence problems are very common on all Projection TV sets including Sony, Samsung,JVC,Philip Magnavox,Panasonic,Akai,Pioneer, Hitachi,Mitsubishi,Zenith and others.
You can get more information and a DIY convergenece repair kit with instructions from the link below.

Here are some of the most common problems with these sets...

*Screen Looks 3-D
*Colors wont align
*Screen may look distorted or warped
*No Audio/Video - TV Shuts down - May also make a constant chirping sound

Problem #2 - Another common problem is dull or washed out video.

Your set may have one or more of the following symptoms....

*Dull looking picture
*White looking picture
*Halos around objects
*Red/Orange looking picture

bb0cf99.pngYou can see some more examples and find a fix using this link on Fixya

Oct 22, 2008 | Toshiba 50H81 50" Rear Projection...

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Thin red horizontal lines appear when viewing a dark background

Look around this sight the answer is explained here. you hace to take off the front speaker cover and a small panal undder it. you will find six knobs on a small panal. use these to adjust the settings fotr the power and they will remove the lines. You will need to have the tv on and I would sugest a normal size phillips head screwdriver not a power tool.

Jul 26, 2008 | Sony KP-51WS510 51" Rear Projection...

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Curved blue lines on screen.

You have a completely different problem. The screen voltage for the blue picture tube is slightly too high on your set. This will put fine lines in the background of the picture, called retrace lines. This is very common and easy to correct. Remove the front speaker cover and the access panel behind it. Look inside and you will see a black box with six controls, each control having a little white glue on it. This is the Focus/Screen block. Three controls are labeled Focus and three are labeled Screen. The screen control in the center is for green but I am not sure if the screen control on the left or right is for blue for your model. With the TV on, set it to VIDEO 1 but do not connect anything to the VIDEO 1 jacks. This will produce a pure dark picture, showing any faint lines in the background. Choose one of the screen controls and increase (turn clockwise) it slightly. If the blue lines do not get brighter it means you are turning the red screen control, so put it back where it was and choose the other screen control. When you find the blue screen control, decrease (turn counter-clockwise) it until just when the blue lines are gone. If you want you can check that the red and green screen controls are set to just below the point where their faint lines are visible. When done, replace the panels and your picture will be back to perfect.

Apr 11, 2008 | Sony KP-46WT510 46" Rear Projection HDTV

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Hitachi 51GWX Scrambled Picture

STK392-560 STKS convergence CHIPs Replace both of them.

Feb 24, 2008 | Hitachi 51GWX20B 51" Rear Projection...

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No picture, but power light and sound OK

The problem you have there was a loss of vertical deflection followed by a complete failure of Q301, the vertical Ic LA7833S.
It may have been in part due to the feed caps located in that circuit and there will likely be NO outward signs of the failure.
The Ic needs to be replaced and the electrolytics in that circuit need to be measured with and ESR meter and replaced if bad.
If it's starting to sound a bit beyond your ability I strongly suggest having a qualified shop do this because you can overheat the vert Ic easily just soldering it in...
If you have a shop do it you might ask what they charge to replace the vertical Ic and ESR the caps in that circuit. Explain to them what you have here with regards to how it went out, dropping to a horizontal line before going completely dead... The more detail you can give the easier it will be for the tech to troubleshoot the problem.
Good Luck!

Nov 24, 2007 | Toshiba 50H72 50" Rear Projection...

1 Answer

Strong red tint with horizontal lines across screen

if you have warrenty, return it. if not, then buya new one...the video fuses are dying...hard to fix it.

Oct 06, 2007 | Akai PT4799HD Rear Projection Television

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