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

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Lamp part number

What is the part number for the Sony model KP-43T70 rear projection television lamp?

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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.

Posted on Nov 27, 2013

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Posted on Jan 02, 2017

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SOURCE: Sony KP-57WS500 57 in. Rear Projection Television

Hi Guys

Your problem here has to do with the amount of aging that happens to the three colour tubes - red, green and blue.

Blue actually ages slower than red and green. What actually happens is the green tube deteriorates and due to green being the predominant colour for brightness causes the blue tube`s flyback lines to appear - especially when switching between inputs or when the video is blanked.

No replacing the blue tube will not solve your problem as the tube is actually the best one of the three.

As someone mentioned there is a way to adjust this by removing the speaker grill assembly in front of the set. Doing the service mode adjustment with the remote is not the right way to solve the problem - you would be adjusting the colour gain and off-set values and would seriously be compromising the white balance of the set.

On the left hand side behind the speaker cover you will see a black square block with six adjustment points. Look for the one marked SCR BLUE, Switch the set to a unused input so the blue lines become visible. Now adjust the BLUE point counter clockwise until the lines disappear. A small adjustment should do it, Switch back to a picture and make sure the whites are still white.

This should sort your problem. I would however suggest asking a Sony service centre to do this for you. This is a dangerous thing to do as you will be working close to the 35Kv supply the the anodes of the three tubes.

I hope this answers your question.

Goo luck.

Posted on Mar 08, 2008

SOURCE: Sony KP-61HS10 61 in. Rear Projection Television

my tv has the same problem but it blinks five time with no picture but good sound

Posted on Aug 01, 2008

welcomejee
  • 10594 Answers

SOURCE: Sony KP-57WS500 57" Rear Projection Television

When your tv shuts down after too much blue screen, how does its standby light flashes?
There would pause in flashes of this light, so count it and let me know to help you out.

Posted on Oct 28, 2008

welcomejee
  • 10594 Answers

SOURCE: Sony KP-57WS520 57 in. Rear Projection TV standby light blinks

Hello,
Please mention how many times standby light blinks on your KP-57WS520
There would be bit long pause between blinks so count the blinks and let me know to help you.

Posted on Dec 05, 2008

  • 8457 Answers

SOURCE: arched lines in dark screens

Ur convergence it dead.Do u know how to solders? Tries these websites. Tv repair World.com or Tvrepairkits.com have it.Buy a convergence kit used what in that kit ur tv well get back to normal.The shop will cost u $300 for parts and labors.

Posted on Jan 01, 2010

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Related Questions:

1 Answer

Sony kp-43770 tv red and green colors will not align how do i correct this,i have used the focus button no success


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

May 20, 2012 | Televison & Video

1 Answer

What is the lamp number for sony kp-57ws520


your model doesnt have a lamp it has three CRTs ( Picture Tubes) instead one is red, one blue and one green CRts are used in your model.

Oct 27, 2011 | Sony KP-57WS520 57" Rear Projection...

1 Answer

Where is the lamp located in a sony rear projection 52 inch tv?


The model number you posted under does not have a lamp. It's Crt projection.

but if you have a different model number and if it does require a lamp, it's usually located in the front. You have to remove the lower from bezel to access it. Sometimes it on the side(Right side facing).

Feb 22, 2011 | Sony KP-51WS520 51" Rear Projection...

1 Answer

Green missing sony kp43t70 green lamp is on tv working, convergence ok


Press the menu button, if the menu has green missing as well it's the tv. If you can't tell with the menu, use a second source, being a dvd or a gaming system. If the green is still missing make sure you use different cables, it will be the tv. if only one source is the issue it will be the source that is missing the green color.

May 05, 2010 | Sony KP-43T70 43" Rear Projection...

2 Answers

Sony KP43t70


The contrast screen can be replaced. However, the Contrast Screen is no longer available from Sony. The corresponding part numbers were 4-070-286-11 and 4-081-064-01. I got this information from an Electronic Parts Distributor.

Feb 18, 2008 | Sony KP-43T70 43" Rear Projection...

1 Answer

Kp-43t70 red out of adjustment


It seems, from your description, that the convergence circuit is failing. The usual components that fail are the convergence integrated circuits.

Dec 20, 2007 | Sony KP-43T70 43" Rear Projection...

1 Answer

Sony kp4t70 no picture


Can you tell me the number of flashes? This will help in diagnostics.

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

1 Answer

Sony KP-43T70


A steady red light is an indication of a power supply regulation problem.. Its not a job that can be done by a do-it your selfer or an end user. Sorry man those days are done. You should for your health and best interest, seek out a local TV repair peep to assist you with this repair.

Sep 13, 2006 | Sony KP-43T70 43" Rear Projection...

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