Question about Projection Televisions

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I have a hyundai hpt 4250 plasma television,and i have no picture anymore,just lots of colors flicking across the screen and i cannot find anyone who can repair it.any advice please.

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Probably the x-main or y-main boards

Posted on Jul 19, 2008

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My 55625 55" works but all of a sudden i have colored vertical lines all across the screen. the picture and color is fine.


What is the brand name of your TV? If you wish to get some details; check the site linked here. Pull up older posts.
http://electronicshelponline.blogspot.com/
Line faults & possible causes to LCD & Plasma screen are given with illustrations. You can get an idea about the fault to an extent. Faults to all LCD & Plasma screen are similar, irrespective of its brand and screen size.
Search the site by type in the "BRAND NAME" of your device; (Exclude the model number), in the "Search box at the top right of the display window of the Homepage" to get gathered related posts

Aug 23, 2016 | Projection Televisions

1 Answer

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

2 Answers

I have some distored blue color across the screen


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 http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

May 15, 2010 | Panasonic PT-53TW53 53" Rear Projection...

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On a plasma, what board would be responsible for performing convergence?


Hi,
Plasma TV does not have such thing like convergence or does not require convergence.
Plasma TV is flat screen and every pixel in plasma panel produce its own light to make color picture.
Convergence section is part of old fashioned rear projection TVs that has 3 CRTs to project color image on front screen of TV.
Hope this info will help you.
Let me know if you have additional question.
Thanks.

Jan 07, 2010 | Projection Televisions

1 Answer

3d like picture, 3 colors bending across screen. convergence option gone from menu


There are bad solder connections on the flyback transformer and fuse #FL231 is open. Pretty hard to repair this yourself.

May 26, 2009 | RCA R56WH76 Projection Television

1 Answer

Pink bar across top of tv screen


This could be from 2 things. 1 is the optical block is going bad or 2 you got a peice of dust blown in from the cooling fan and its blocking the color filter internally. If you are capable you can take the tv apart and blow compressed air into the color block and remove the dust. Hope this helps

May 25, 2009 | Sony KDF46E2000 46" Projection HDTV

2 Answers

Vertical color lines


Here is a picture of my TV problem, the green horizontal line is from the camera flash. thanks for the help.4d2ca33.jpg

Jan 15, 2008 | JVC AV-48WP30 48" Rear Projection...

1 Answer

My 50SBX70B flicks than lost the power


Symptom: NO HOR SYNC
Cause: DEFECTIVE I008
Symptom: No Horizontal Sync. When PinP is called up, main picture may lock up for a 8 moment, then it goes back out of sync.
Cause: I008 defective (Sync Switch)

Jan 15, 2008 | Hitachi 50SBX70B 50" Rear Projection...

1 Answer

3 curved lines top & bottom/blurred picture


This indicates a convergence problem..convergence power supply probally.. however ive seen 2 other cuicits cause this ..

Sep 24, 2007 | RCA HD52W59 HDTV Projection Television

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