Question about Sony KP-43T70 43" Rear Projection Television

3 Answers

Sony KP-43T70 green ghost problem

Hi, I have a Sony KP-43T70 it is 7 years old and I'm the original owner. My problem started around a year ago but it is getting worse, the picture looks fine some of the time but when there is white in the background the pictures look like they have a green ghost. I have cleaned the lenzes and wiped off all the dust on the mirror but it is getting worse. Have I done something wrong in the hook up? Thanks for all the help.

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  • KENNETH WHITE Apr 05, 2007

    Hi, Thanks for the reply. I'm new to this board and I do not know what the CRT-s is. Please help again. Thanks Jay

  • KENNETH WHITE Apr 06, 2007

    Thanks I will see what I can do about having someone check that problem.

  • KENNETH WHITE Apr 06, 2007

    Hi, I have done that many times, the + also shows the green. I even opened the back, wiped off all 3 lenses and the projection mirror, that did not help any. Thanks for all the help.

  • woody2266 Dec 19, 2007

    I have also stated to get green ghosts. What would the average repair cost be to replace the CRT ? Is it something that a somewhat competent person could do?

  • sivapith Apr 13, 2008

    A friend just gave this TV to me, and the color seems to be way off. Everything is too red, no matter what I try to change. The problem seems to be that green is not rendered correctly. Things that should be green are not, but whites have a green ghost bleeding to the right.

  • lanthony25 Jun 23, 2008

    the right side of my set looks good, but as you look to the left you can see green and red ghost images. it gets worst from the center over to the left

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SYMPTOMS
Ghosting image

RESOLUTION
Found IC1506 and IC1507 on the G Board defective.

The full service manual for parts locatioc can be found at fletchersite.com

Posted on Jun 01, 2008

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The cause of the problem can be that the CRT-s are getting weak. Life span of CRT is around 30000 hours of working time. Please calculate. If you need more info please advice.

Posted on Apr 05, 2007

  • Arpad Kothai
    Arpad Kothai Apr 05, 2007

    CRT is short form for Cathode Ray Tube. In your set there are 3 of them.

  • Arpad Kothai
    Arpad Kothai Apr 05, 2007

    CRT-s are under the lenses.

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When was the last time you adjusted the convergence on your tv? It is possible it is a bit out of adjustment.... and do not over adjust

Posted on Apr 06, 2007

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Related Questions:

1 Answer

Lamp part number


KP-43T70 is a CRT based rear projector and does not use a Lamp like newer LCD/DLP projectors. It uses 3 (Red, Green, Blue) glycol liquid cooled CRT's (like the picture tubes of yesteryear) to produce the image/light as opposed to a Lamp.

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convergence chips will need to be replaced and I think model number is not correct that was posted, kp-43t70 instead of kp-43770?

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1 Answer

43" projection tv


you have a problem with the convergence circuits in your tv. Probably will cost between $300 and $400 depending on where you live.

Sep 07, 2009 | Sony KP-43T70 43" Rear Projection...

1 Answer

2 separate colors on screen


sounds like your convergence IC's have finally gone bad.. they seem to last 5 years on average.. have a look here: http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html

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5 times blinks is error code for No Good White Balance and you said that picture is very green.
As you know TV is approx 7 years old so it needs RGB gain adjustments.
If you are TV tech person or know about TV repair, let me know to guide you further. Or contact local TV repair shop to fix it.

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1 Answer

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remove the front speaker assembly and the small access panel behind it and you will see a small square control assembly with 6 dials on it 3 control the color guns and 3 control the 3 gun focus. Try turning down the red control slightly they will be set up just like the CRTs red green and blue.

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This TV is about 7 to 8 years old already and is not HDTV compatable.

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Probable bad blue CRT and if blue goes bad guess what might
happen to the red and green.........T.

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1 Answer

Sound stays on & picture goes to blank screen


I do not see any reference on this problem and I even checked with Sony. If you are on a cable box, I suspect that is the problem.

Oct 25, 2007 | Sony KP-43T70 43" Rear Projection...

1 Answer

KP43t70 NO PICTURE SUDDENLY


SYMPTOMS
No power
RESOLUTION
Found IC601, F601, and R612 on the G Board defective.

Get the manual at http://fletchersite.com/contact.php

Oct 14, 2007 | Sony KP-43T70 43" Rear Projection...

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