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

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Sony KP-43T70 Was watching the televisionand the screen shut down and the volume as well. Now there is a red light that stays on continuously. Please Help.

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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.

Posted on Sep 13, 2006

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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.

Nov 27, 2013 | Sony KP-43T70 43" Rear Projection...

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

I have a sony rear projection Tv 43 inch about 13 years old the red light in front blinks continuously when the on button is pushed and nothing else happens\r\ndue to it's age will I be able to get it...


It has been quite sometime, that I have repaired this TV. In one case the audio IC with standby is bad. The symptom you describe, is my first area of trouble shooting. You may resist the temptation to replace this TV. I understand. It would be better to replace this TV. Sony is a unique TV, and parts for this may be substituted with non originals. Even if this set is repaired, it will be a matter of short time that it will go down. I would certainly shop for a new Sony flat screen TV. Your chances of having a long running TV is in your best interest. Thanks for asking and show all hands of support!

Aug 15, 2011 | Sony KP-43T70 43" Rear Projection...

4 Answers

Green flashes then tv turns off


or a new lamp. you could first replace the lamp.
the screen might work fine for a couple of seconds, but then it fades away or deteriorates. This means the lamp is going bad.

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1 Answer

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

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I've had my T.V for about 5 years, and the other day the screen just died and I have no audio, but the when I plug it in the red light in the front flashes, have any idea on what to do.

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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.

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1 Answer

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Have a Tech. replace the focus/screen block if the problem continues you have a bad red CRT.

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