Question about Toshiba 55H70 55" Rear Projection Television

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Top 6" only thing viewable.

Top 6 inches of picture working fine, everything else black snow flowing from right to left. Sound is also distorted. will not power off either.

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Re: top 6" only thing viewable.

If you go to the following link we have the service manual for you set for 10.99 and we provide unlimited chat support so you can diagnose and repair your set. Just click on toshiba and you will find your model number. Then click on the contact us link and provide your email address we will then email your manual along with instructions on how to enter into the chat sessions. Hope this helps you out.

Posted on Jan 13, 2008

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Mitsubishi hd1080 series tv, about 7 yrs old was working fine but now picture is distorted like 3d and black box appears? What's the problem and can I self fix or call tech?

It sounds that the convergence circuit has failed. It is a skilled work to make it right. If you have sound knowledge in electronics, you can do it by yourself. If you wish to get more details, check this site linked below. Pull up older posts there. Check the site with patience, as it has over 2380 posts now. All are related to electronic equipment repair help. If you search the site in Timeslide option, which can be selected from the drop down list at the top left of the display window, it will be easy to locate the related post. You can also do a search by type in the brand name to your device into its search box at the top right of display window.

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can you take a picture to your tv to see exactly what happen to your vertical problem!? then you can post here thanks!

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try hitting the side of your set to see if you can get it to jump out of place. If your can get if to fail by doing this your convergence amps have bad solder joints.

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I have a Nikkai A15gy mini wireless TV/video sender, connected from a Sky box, sound is OK, but picture is distorted. The bottom 1/2 inch of the picture appears at teh top of the screen. Have tried...

Hey there Merch12, I had the same issue. I turned it off, unplugged absolutely everything and reset the trip switch in the house and left it over night, the next morning it worked like a GEM hoped that helped you! The same thing happened with my
<a href="">HP Laserjet Pro M1536DNF</a> printer, I used the same technique but it didnt work

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I believe i have the same problem myself. When my TV is on any of the Component Inputs without my DVD player turned on i usually get the normal green screen. But now that is a dip in the green at the top of the screen from the top left to almost the top right and black pushing down on the dip. Almost like a green curtain was sagging at the top and you can see the black behind it. It does this on every input and distorts every picture you see. The distorted picture has all the green slightly off from where the rest of the picture is and where the dip at the top of the screen is there is somtimes purple instead of black.

I know the basics of how the picture gets onto the screen and its my guess that the Green "gun" for lack of a better term and somhow come loose, or been missaligned to a great extent. I would love to find an answer to this problem, and anyones best guess as to how much a repair man will charge, just so i know the ballpark.

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Hello, the problem with your projection TV is in the so called bad soldering in the vertical deflection stage. Please contact a pro in order fot fix the error. If you need more assistance please advice. Arpi

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1 Answer

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This doesn't sound like a programming issue. I had a very similar problem about 6 months ago and I fixed problem. I had cold solder joint on the video power board. It was the board in the middle. The power supply was to the right. The video board had a driver with a bunch of legs. About 7 solder joint where cold or loose. I solder the board and my mitsu wide screen was fixed. Hope this helps.

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