Question about Hitachi 43F300 43" Rear Projection Television

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No clue TV has a thin green line across the screen and when any words are streaming across the screen, ESPN, etc., they "trail" off of the screen. (Downward) TV is 3 years old. Also, very top left hand corner "droops" down. Help? Thanks.

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Re: No clue

Sounds like failures of the convergence output IC's. They should be STK392-110's in the set. Also check associated circuitry around them.

Posted on Mar 25, 2007

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A horizontal band of green and red lines across the screen

If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience.
Line, faults & possible causes to LCD & Plasma screen are given with illustrations. You can get an idea about the fault to an extent.
Type in the brand name to your device, in the search box [at the top right] of the display window and the Search will start at once as you type in, and will show you all the related posts. It will make surf easy.

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Green and Red (thin lines) across entire screen [JVC 70 G886 HD TV]. Screen went to all green (wide and thin) within 1/2 hour and picture hasn't come back. "Input selection" box is visible and clear...

Try a "hard reset" first by unplugging the set for 30 seconds. and if no help, you may have a problem with the SMPS power supply, it might have a bad capacitor or two by now. Worth repair if engine is good compared to a flat panel.

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Pt61g42v.this is a panasonic 61 FOCUS OUT

my tv flat lined the screen went black with a twisted line across the screen what is the problem?

May 13, 2010 | 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

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I have a KP-65WV700 and the screen looks a lil to green

OK, I'm the guy that was having the same problem, but had a blue tint to the screen. I also had blue lines running across the screen, and when I followed the steps below that were posted by another user not only did the lines disappear, but the blue haze vanished as well. My tv looks like it's new again, so you may want to try this:

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I have fixed this several times on my KP 65WV700

As Slinteriors posted if it is a thin curved line you need to adjust the screen control, it's sorta like a brightness for each color, and if one color is too high it will produce a thin curved line.

The best way I have found to get to the controls is by removing the lower grey speaker cover front the front of the TV. There are 6 screws if i remember, 3 on each side. Then it snaps off, seems like its going to break but you have to pop it off pretty good.

Once its loose you have to remove a cardboard like cover plate in the center that will give you access to the small controller board.

Now be very careful while experimenting on which knob controls which colors. Turn them very slow, if you turn to fast you will cause your TV to shut down. If this happens, turn the adjustment back to original spot and turn TV back on and take it slow.

Adjust the correct color until the line just goes away. Its easiest to do this with a black screen.

Nov 18, 2008 | Sony KP-65WV700 65" Rear Projection HDTV

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Arched pink lines across screen. Now green and pink double stacked wording.

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

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The words on the screen is doubled or trippled.

Go to the picture control menu and turn the color to minumum so that you are watching a black & white picture. Do this to determine if the color offset affects the overall screen or just the lower corner. If the center is off, go to the convergence adjustment menu and align the red and blue onto the green as described in the owners manual. Some models also allow you to align the outer edges as well. If the bottom is still bad you may have a problem in the convergence circuit. If the outlines are not seriously bowed or distorted a minor convergence toutchup by a qualified technician should correct the problem, otherwise parts are involved and the repair is considered major.

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My toshiba tn61x81 projection tv

have you tried the convergence option in the menu? i believe it is under "picture". this allows for nine different sections of the screen to be adjusted when projection images get out of whack.

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Television has no picture

That TV uses the PTK195 chassis, and the fact that you see only a thin line for each color near the bottom of the screen tells me your vertical output IC has stopped working, and is putting a small DC voltage across the yokes. I have seen this caused by a defective vertical output IC and I have also seen vertical problems caused by a small CRT coolant leak which drips onto the main board near the vertical output IC. If you do not have experience servicing the PTK195 chassis than have a qualified tech handle it for you.

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