Question about Toshiba 61HX70 61" Rear Projection Television

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Yellowish green hump/curve at bottom of screen. Blue is at fault

All words etc at bottom of screen are now doubled with the blue above the normal posiltioned words. The distorted offset works follow a moderate bell curve with a 3-4 inch apex. It is not a convergence problem.

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  • mmajorss May 11, 2010

    red & blue OK on my set..green forms bell curve especially at bottom..same solution?? Could you list chip part numbers?

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  • Master
  • 767 Answers

Easy one of the two convergance chips
has failed .they cost about 10-30$ etch
so dont let them over charge you ,if
you decide to get it repaired

Posted on Jun 26, 2009

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1 Answer

Red and blue ghosting,


The most likely cause is shorted convergence chips and possibly a few pico fuses.

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,Pioneer2_bing.gif Hitachi,Mitsubishi,Zenith and others.
You can get a convergenece repair kit with instructions from the links below.

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

Problem #1) Convergence

Yours may have one or more of the following symptoms...

*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

You can see some more examples and find a fix herebb0cf99.png http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Jul 12, 2009 | LG RU-52SZ51D 52" Rear Projection...

1 Answer

Hitachi 46F500 and there is a blue curved bar


Your TV most likely has a Convergence Chip Failure ( common problem )

Here are some of the most common symptoms and example photos of a convergence problem

  • Screen looks 3D
  • Colors don't line up
  • One or more colors can't be adjusted when using the convergence menu.
  • Screen is bowed or warped.
701cb04.jpg
77ea520.jpg
f0900cb.jpg

2c07611.pngSolution #1

You need to replace the convergence chips and convergence resistors. Check the site www.TvRepairKits.com. They have put together convergence repair kits for most models.

The kits include a photo instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, thermal paste, etc. Everything you will need to do the repair yourself.

May 15, 2009 | Hitachi 46F500 46" Rear Projection...

1 Answer

Shadow images and scrolling banner curves upward and back down.


Your TV most likely has one or more possible problems.

Problem #1: Convergence Chip Failure ( common problem )

Here are some of the most common symptoms and example photos of a convergence problem
  • Screen looks 3D
  • Colors don't line up
  • One or more colors can't be adjusted when using the convergence menu.
  • Screen is bowed or warped.
701cb04.jpg
77ea520.jpg
f0900cb.jpg
Here is a quick test....

Using your original remote go-to the tv settings then goto the convergence section.

Try to adjust the red and then the blue convergence.



You should be able to move them up, down, left, and right.

If you can't move them in all directions your convergence chips are bad and should be replaced. This is a common problem.

2c07611.pngSolution #1

You need to replace the convergence chips and convergence resistors. Check the site www.TvRepairKits.com. They have put together a kits for most models. If you don't see a kit for your set send them a quick note and they will put one together for you. Their kits include a photo instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, etc.


Problem #2 CRT Fluid is Cloudy

Projection TV tubes have a liquid coolant that is used to keep them from overheating. After many years the coolant in the blue and green tubes will become cloudy and cause the screen to look dull, red/orange, etc. You may even see halos around images.

Picture of a set that needs the fluid changed.

578ba6c.jpg
TV set after fluid change

65af323.jpg

2c07611.pngSolution #2


What you will need to do is replace the coolant and clean the crt. You can get a repair kit from www.TvRepairKits.com that includes replacement coolant, photos. instructions, etc.

Mar 15, 2009 | Panasonic PT-53TW53 53" Rear Projection...

1 Answer

Red, Green, Blue curve upwards and cast shadows


that sounds like a typical Convergence IC problem..

http://i.ehow.com/images/GlobalPhoto/Articles/4575598/ConvergenceICs_Full.jpg

this is a picture of what typical convergence ics look like

Mar 12, 2009 | Panasonic PT-53TW53 53" Rear Projection...

2 Answers

Double Letters-One in Green other Red in bottom corner


yes goto menue and goto convergence
line up all red blue and green cross hairs so thay are wite.
thanks.
daniel

Jan 13, 2009 | Akai PT4799HD Rear Projection Television

1 Answer

Samsung HCL473W 1080i red shadow & words are curved at top/bottom


I believe you have convergence problem on your rear projector TV. It require to replace may be 2 IC output convergence or the convergence drive, after replace those component you need to readjust convergence which mean you move the RED GREEN BLUE to be 1 on top each other you must have the remote control and service manual to get into the service mode, if you thing you can get those part in your country the service manual I may help you with that, ask your husband if he like to challenge it. I hope that is give you some ideas
Cheers

Dec 17, 2008 | Samsung - Projection TV replacement lamp...

2 Answers

Rainbow on the screen


Do you have any larger speakers close to you tv. Or any magnets been neer it. If you unplug it for a while the tv should have remove the rainbow

Aug 28, 2008 | Panasonic PT-53TW53 53" Rear Projection...

1 Answer

Blue colors appear greenish in middle third of screen...there is a circle of yellowish green in the center of the screen


You have a bad optical block, the block has a 2 year warrnty but you will have to pay labor to have a tech change it

Aug 08, 2008 | Sony KDF-E50A10 50 in. LCD HDTV

2 Answers

RCA 56 inch hdwidescreen


Did you use the Automatica Convergence to try and straighten it out? If that does not help, you can manually adjust the convergence.

Jul 12, 2008 | RCA HD56W58 56" TV

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