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Lcd screen error

No blue background light, only black blocks on the top row. example: [][][][][][][][] controls do not respond. no other lights.

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Indication Light On, Black Screen, Unresponsive


I happened the same problem and the solution must change the power pack

Jan 25, 2014 | LG M2362D 23 in. LCD TV

1 Answer

Black shodows on screen. Visible w/ every source...less visible with bright background...very visible with medium to dark blue background. Have seen a lot of complaints on the Internet related to this...


This problems only two posibilities,one some how u got a light image burn in into the LCD screen panel itself.If it is the LCD screen burn in,this is not repairable.The other one it could be the T-Con decoders board problems and it dying this board sit wright at middle at the bottom of the LCD screen panel to decodes and regulate pictures as it passing and go in and out of the LCD screen panel itself.Tries websites like Shopjimmmy.com,Ebay.com to buy a refurbish T-Con decoders board for the replacement,possibilites could solved ur light background shadows problems.

Dec 07, 2010 | Samsung LN-S4041D 40 in. LCD HDTV

2 Answers

When tv is turned on, in about 10 to 15 seconds the screen goes blue. If the tv is turned off, then turned back on, the picture is fine for about 10 seconds then back to the blue screen.


This is simple--this model is prone to bad picture tubes--blue is most common--screen goes bright blue and set shuts off--set is detecting too much current being drawn--forget replacing the tube--very expensive as only available on rebuild basis.

Here is what to try:
1) you need to remove entire plastic grill under screen--held in one of two ways--either several screws on back on either side or two screws at bottom front under caps.

2) With it free, pull up from bottom and tilt entire grill to the left--the front controls are mounted in it and you will need to undo some ties that hold it to get it out of the way.

3.) Grill has tabs at top that tuck in and you lift it from bottom.

4.) Remove small inspection plate behind grill--a few screws.

5.) Directly behind grill you will find a square black plastic block with 6 shafts (they are controls) One row left to right will be marked Focus--do not touch those. The other row will be marked screens. Look closely (green is the middle one) as each will have r,g,b in small black letters.

6.) In your case LOCATE THE BLUE SCREEN CONTROL. Best way to do this is take set to unused video input and turn blue SCREEN down (usually to the left and less than 1/4 turn) until the blue just goes away---on blank input you should only see VIDEO 1 etc in green.

Do not turn down too much--just enough so blue is not there--no blue background or curved lines.

THIS MAY ONLY BUY SO EXTRA LIFE OUT THE SET AS ALL THESE HAD ALL THREE TUBES HAVE THIS PROBLEM.

You only have seconds if the set is shutting down, Once you get the blue down enough set will stay on.

Take to regular channel and with color all the way off--you should have a black and white screen, adjust just a little if needed.

I have done this many times and most get another year or more out of the set--if one of the tubes is causing this (very likely) sooner or later it may get worse and return to the point where adjusting does not help--when this happens replace the set.

If this has told you something that helps you or you did not know rate this solution as very helpful as I do this here for free.

If you have questions let me know BEFORE you attempt it.

REGARDS, SD TECH

Aug 19, 2010 | Sony KP-51WS500 51" Rear Projection...

1 Answer

My kp51HW40, flashes blue and sometimes cut itself off, the red led light on the front blinks. It comes back on when you press the power button on the remote.


This model is prone to bad blue and other picture tubes; the tubes will cause the screen to go bright blue (or red or green) and the set detects too much current is being pulled and shuts the down.

The tubes are NO LONGER AVAILABLE and even if they were too expensive--only way to get one now is remove the bad one and send it out for rebuild--about 300 per tube.

THERE IS ANOTHER WAY TO DEAL WITH THIS THAT NEEDS NO PARTS AND TAKES ABOUT 10 TO 15 MINUTES.


IF YOU WANT I WILL EXPLAIN IT TO YOU:


With the set unplugged you need to remove the entire plastic grill on the front of the set under the screen. It is usually held in by either 3 screws on either side on the back or 2 screws on the bottom front covered with a little cap.

It lifts out from the bottom and has tabs at the top that tuck into slots. You will be able to free it but the front controls are mounted into in---you turn it to the left and tilt it out of the way--there are some wires you can release that are held with ties etc.

With it clear remove the inspection plate behind it dead center. Directly behind the plate you will see a square black plastic block with six black plastic shafts.

There are two rows of three---you have to look closely as one row are marked FOCUS(do not touch those) and the other row are marked SCREEN----looking closer you will see b,g,r which are blue, green and red(green is always in the middle).

Once you locate the blue screen control for sure, plug the set on and take it to a unused VIDEO INPUT.

Look at the screen and if you see blue with or without faint curved trace lines turn the blue SCREEN CONTROL DOWN (USUALLY TO THE LEFT) UNTIL the screen shows no blue lines or background.

The only thing you see is (video 1 for example in green).

The idea here is simple, turn the blue screen down a bit so that tube is not pulling so much current.

This costs you no money to do and it may only buy you some time and more life out of the set. Sooner or later the problem may come back and get worse or the Red or Green may do the same thing.

I have done this "adjustment" on many of these sets and many get another year or more after it is done.

If it does not cure the problem, time to think about another set.

Let me know before you attempt it if you have questions and if this information helped you decide what to do, rate this solution as "very helpful" as I do this here for free.

REGARDS, SD TECH

Aug 10, 2010 | Sony KP-51HW40 51" Rear Projection...

1 Answer

No image on LCD while all else seems normal.


Go here:
http://esupport.sony.com/US/perl/news-item.pl?mdl=DSCF717&news_id=161

Sony had a certain issue with the CCD chip on this camera. If it's this issue, they'll fix it free plus $20 until March 2010.

Dec 12, 2009 | Sony Cyber-Shot DSC-F717 Digital Camera

2 Answers

Screen fades from normal at start-up to blue in about 10 seconds, TV stays on, display goes black, sound still on, and red light on front blinks 5 times


These sets kp51ws500 had issues with bad picture tubes----this set uses a Red,Green and blue picture tube.

The tubes are only available on a rebuild basis and very expensive. There is one thing that requires no parts replaced you can try: here are the instructions:

v\:* {behavior:url(#default#VML);} o\:* {behavior:url(#default#VML);} w\:* {behavior:url(#default#VML);} .shape {behavior:url(#default#VML);} Normal 0 false false false MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman"; mso-ansi-language:#0400; mso-fareast-language:#0400; mso-bidi-language:#0400;} SONY WITH BLUE SCREEN PROBLEM:

You may have a bad blue picture tube but there is a way to deal with this first----the set has a black plastic block with six controls---three are Focus(red,green,blue) the other 3 controls are Screen controls(red, green, blue) Someone has to remove the entire piece on the front of the set below the screen(usually a plastic part) most of the time it is secured with 3 screws on either side of the set in the back; once you remove the screws the entire piece should pull out(pull from right to left(it will not fall off or come out easy--it is held in with several large plastic pegs) With it removed there is an inspection plate with 4 screws-----the screen/focus block is behind it.

You need to look very closely at the block to identify the focus versus screen controls----one row left to right will be marked Focus and the other row left to right will be marked screen------YOU need to locate the Blue Screen control(they are black like the block) With the set on(be careful) go to a video input clip_image001.gif with nothing connected---if you see a blue screen as well as the input number turn the BLUE SCREEN CONTROL SLOWLY TO THE LEFT UNTIL THE BLUE is gone.

If this cures the problem you may only be buying yourself some time----if the blue picture tube is bad sooner or later this trouble may return----I have seen sets where this was adjusted and the set worked for a year or more with no repeat of the trouble----replacing the blue tube would likely cost you 400 - 500 parts and labor.

I do this here for free so if this has helped you take a moment and give me a vote here.

SD TECH

Dec 05, 2009 | Sony KP-51WS500 51" Rear Projection...

1 Answer

Hitachi 53fdx20b picture is red


This is a set first made in 2002. I have seen a few of them with too much red.

Most likely what is wrong is the RED SCREEN CONTROL. It is located behind the front grill assembly at the front of the set. Screws usually secure it from the back on either side and then it pulls off--held by pegs usually.

Behind it is an inspection plate with several screws. Behind that is a BLACK block about 3 inches square with six controls(everything is black) One row of three will be marked FOCUS--stay away from those. The other row will be marked SCREEN.

With a flashlight you will have to look closely at the two rows of controls--they will have r,g,b marked next to them. (red, green, blue)

If you go to a Black and white program and the background is redish etc--take the set to a unused Video input2_bing.gif and after you locate the RED SCREEN CONTROL turn it slowly (less than 1/8 of a turn) to the left---the idea is to adjust just until the screen does not show red---on a blank input it should be black.

Double check it on a Black and White program and then if it was the problem the color should now be normal.

These sets did have some problems with that Screen /Focus block going bad--the entire block costs under 25 dollars and all the wires on the back of it plug in; if you have to keep adjusting it over a short period of time replace it or live with it.

I do this here for free so if this has helped you rate this solution as I do this here for Free.

SD TECH

Nov 29, 2009 | Hitachi 53FDX20B 53" Rear Projection...

1 Answer

BLUE SCREEN WITH FAINT CURVED TRACE LINES


I am the one who wrote that solution--this varies a little from model to model but here is the basic:




v\:* {behavior:url(#default#VML);} o\:* {behavior:url(#default#VML);} w\:* {behavior:url(#default#VML);} .shape {behavior:url(#default#VML);} Normal 0 false false false MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman"; mso-ansi-language:#0400; mso-fareast-language:#0400; mso-bidi-language:#0400;} SONY WITH BLUE SCREEN PROBLEM:

You may have a bad blue picture tube but there is a way to deal with this first----the set has a black plastic block with six controls---three are Focus(red,green,blue) the other 3 controls are Screen controls(red, green, blue) Someone has to remove the entire piece on the front of the set below the screen(usually a plastic part) most of the time it is secured with 3 screws on either side of the set in the back; once you remove the screws the entire piece should pull out(pull from right to left(it will not fall off or come out easy--it is held in with several large plastic pegs) With it removed there is an inspection plate with 4 screws-----the screen/focus block is behind it.

You need to look very closely at the block to identify the focus versus screen controls----one row left to right will be marked Focus and the other row left to right will be marked screen------YOU need to locate the Blue Screen control(they are black like the block) With the set on(be careful) go to a video input clip_image001.gif with nothing connected---if you see a blue screen as well as the input number turn the BLUE SCREEN CONTROL SLOWLY TO THE LEFT UNTIL THE BLUE is gone.

If this cures the problem you may only be buying yourself some time----if the blue picture tube is bad sooner or later this trouble may return----I have seen sets where this was adjusted and the set worked for a year or more with no repeat of the trouble----replacing the blue tube would likely cost you 400 - 500 parts and labor.

I do this here for free so if this has helped you take a moment and give me a vote here.

SD TECH

Nov 14, 2009 | Sony KP-51WS500 51" Rear Projection...

3 Answers

Screen turns blue


You may have a bad blue picture tube but there is a way to deal with this first---This is a 2001 model and does not have a light engine---I did one of these with the same problem a week ago---the set has a black plastic block with six controls---three are Focus(red,green,blue) the other 3 controls are Screen controls(red, green, blue) Someone has to remove the entire piece on the front of the set below the screen(usually a plastic part) most of the time it is secured with 3 screws on either side of the set in the back; once you remove the screws the entire piece should pull out(pull from right to left(it will not fall off or come out easy--it is held in with several large plastic pegs) With it removed there is an inspection plate with 4 screws-----the screen/focus block is behind it.

You need to look very closely at the block to identify the focus versus screen controls----one row left to right will be marked Focus and the other row left to right will be marked screen------YOU need to locate the Blue Screen control(they are black like the block) With the set on(be careful) go to a video input with nothing connected---if you see a blue screen as well as the input number turn the BLUE SCREEN CONTROL SLOWLY TO THE LEFT UNTIL THE BLUE is gone.

If this cures the problem you may only be buying yourself some time----if the blue picture tube is bad sooner or later this trouble may return----I have seen sets where this was adjusted and the set worked for a year or more with no repeat of the trouble----replacing the blue tube would likely cost you 400 - 500 parts and labor.

I do this here for free so if this has helped you take a moment and give me a vote here.

SD TECH

Sep 03, 2009 | Sony Grand WEGA KDP-57XBR2 57" Rear...

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