Question about Projection Televisions

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There was a flash and then TV screen became covered with a blue tint with wavy lines through it.

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Blue CRT is shorted. Please respond with the model number of your set and I will assist you with the problem. Please respond to this same post when replying.

Posted on Sep 23, 2008

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My samsung projection tv has blue wavy lines on top of screen, I adjusted convergence, the blue will not line up horizontally, is there a inexpensive solution?


It means one of the chips has a bad section inside it, both chips and maybe a resistor near them will have to be replaced, involves soldering as each has about 18 pins soldered in

Check with TVrepairparts.com who sells some kits for this by brand and model number

Dec 09, 2012 | Projection Televisions

1 Answer

Toshiba Model 51h84


The wavy when cold is a issue with a board in the set--Hyper board--the warmup until it begins to work will gradually get longer and longer.

The blue: look at set on a unused video input--if see faint curved blue lines with some blue visable on the screen the blue screen control needs to be adjusted just slightly down until the blue and curved lines are not seen.

May 15, 2012 | Toshiba 51H84 51" Rear Projection...

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Have Sony Model# KP-57HW40 Big screen rear projection tv..Has blue wavy lines across screen, and sometimes flashes blue, can you give me assistance??


Blue Picture Tube , bad Video IC on Blue CRT board.Or Blue screen drive control to tube needs to be adjusted down some.

Most Likely Bad Tube!

Jul 12, 2010 | Sony KP-57HW40 57" Rear Projection...

2 Answers

I have blue dots all over my screen aa well as


Hi,
This blue dot and hue problem is due to bad lcd in your tv as its Sony dlp tv that has optics block, that is also called light engine, it consists of 3 lcds, filters and lamp to produce an image that projects on front screen.
In this tv, blue lcd became defective and complete light engine will be replaced to get it fixed.
As other expert talking about blue CRT (cathode ray tube) that does not exist in this tv and my fellow expert has no idea about this kind of tv, sorry for that.
Hope this info will help you, let me know if you have additional question.
Thanks.

Dec 19, 2009 | Sony Grand WEGA KDF-42WE655 42" Rear...

1 Answer

Blue tints w/ tini blue dots


if you see blue pixel type groups of squares or dots you may have a burnt light engine and this is common in many LCD rear projection sets; a blue screen may mean the engine became burnt--LCD rear projection sets of this kind have an optical enginge--with red,green,blue prizims--sometimes they get burned by the lamp---a photo would tell me or most techs what the problem is---the cost of a replacement engine is very expensive--some models with this problem are covered by Sony even if the set is no longer in warrant

Aug 07, 2009 | Sony Grand WEGA KF50WE610 50" Rear...

1 Answer

Jvc av-48wp74 48 in widescreen green projector problem


Projection TV sets have two very common problems listed below.

Problem #1) 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 http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Jul 27, 2009 | JVC AV-48WP74 48" Rear Projection...

1 Answer

Blue Screen/Waviness


sounds like convergance ic's mits is also know for bad caps
1000uf @ 16v check for bulges on top of the cap
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html

Jan 05, 2008 | Mitsubishi WS-55809 55" Rear Projection...

1 Answer

Horizontal Lines and Blue Tint on my Sony KDP 57XBR2


ok,your porblem is very simple,reheat or resolder the main board your tv.

 

Oct 22, 2007 | Sony Grand WEGA KDP-57XBR2 57" Rear...

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