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I can't get anything on the screen but blue. I need to get to an o3

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Require make and model #

Posted on Aug 23, 2008

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I have a o3 jvc 56 in model number av56wp74. I have a horizontal blue line across the front of my screen. Do I need convergence kit or dlp lamp ? How much would each cost? And is it woth fixing?


The model listed is fairly easy to repair if a convergence issue.(DOES NOT USE A LAMP-HAS 3 PICTURE TUBES.

The entire front grill below the screen is held on by the two tiny screws at control door on front and more on either side at rear--with it free you can remove the grill.

Behind it is an inspection plate---the board with the metal heat sinks directly behind it up front is the convergence board.

Set uses two of the STK-392-110 CHIPS--cost of parts (chips etc) will be under 30 dollars total(Suburban Electronics is a good source)

The board will come out (if attempt this I can tell you what and how to get it out) chips each have 18 pins and are soldered in place.

Just so you know what the board looks like here is a photo of it removed from a set I fixed.

SD TECH
5_28_2012_5_28_44_pm.jpg

BACK VIEW AS SEEN FROM FRONT OF THE SET

May 28, 2012 | JVC Televison & Video

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Sony kp-ws500 has very fine red and blue horizontal lines across screen tried adjusting convergence, and it didn't do anything


Red and Blue Tube screen drive controls needs to be turned down some, tubes are over driving causeing drive lines.

Sep 16, 2010 | Sony KP-65WS500 65" Rear Projection...

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My Sony LCD Projection TV has blue pixilation occuring.


This is not a cheap fix, but call sony they know about this problem and have sent out new TVs to people who have had the issue, I have had about 7 out of ten people who call into sony get brand new sets FREE, so tell them that your optical engine need to be replaced at around $900-1300 and how old it is and the S#, they may not do anything for you but I would try, good luck

Jun 07, 2010 | Sony Grand WEGA KF50WE620 Television

1 Answer

Rca rear projection screen way to much blue


replace convergence ics .press the menu and go into the convergence
alignment.see if you are able to align the blue convergence. if not replace the convergence ics.

Aug 04, 2009 | RCA P52771AT 52" Rear Projection...

1 Answer

Sony Color Rear Video Projector - KP 57hw40 / Mfg. February 2002


i have the same problem picture is blue/green with blue and green arched horizontal lines

no picture at all only sound then tv shuts off after 5-10 seconds and then a bright blue flash in the center of the screen

have tried adjusting the voltage screws didnt do anything

Jul 13, 2008 | Sony KP-57HW40 57" Rear Projection...

1 Answer

Blue crt assmbly maybe?


its very possible that the blue CRT is horting the set out. Heres how you can test it. Remove the speaker grille and access panel behind the grille and you will see the crts. remove the blue crt circuit board from the end of the blue crt and make sure it isnt touching anything then try powering up the set if it doesnt shut down then you have found the problem and you will need a new crt. or you can switch the blue circuit with the green and try it iwth the blue on green and the green on the blue then if the screen turns green before shutting down you will know that its a problem in the blue drive circuit and not the crt. lety me know if you need further assistance.

Apr 01, 2008 | Toshiba 46H84 46" Rear Projection...

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Blue and red arched lines on screen when background dark


Sounds like you are describing retrace lines that could indicate that your CRTs or something in the drive circuits are bad.. Check the resistors on the CRT sockets to see if they are in tolerance. If they are try turning the red and blue screen adjustments down just a little this should take the lines away. You will however be needing service in the not to far future. Turning the screens down should help if the resistors check out. Let me know if you need anything further.

Jan 31, 2008 | Sony KP-48S35 48" Rear Projection...

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I have red green and blue lines thru the screen


Difficult repair = requires chassis pull and convergence circuit
repair.....Replace convergence IC's and any bad soldered in fuses..........then check alignment.................T.

Nov 30, 2007 | Mitsubishi VS-6041 60" Rear Projection...

1 Answer

Blue Screen


Sounds Like Bad Tuner,Try Running Audio Video Jacks in,Also Replace your Cable wires ttech

Jul 29, 2007 | Mitsubishi WS-55313 55" Rear Projection...

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