Question about Sony KP-43T90 43" Rear Projection Television

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Sony tv I have a sony kp-43t90 it has no picture and no sound, the power light comes on and then just flashes and in a few seconds shuts off can you help.

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  • ERNESTO RESTO Jul 05, 2008

    i have the same ploblem i need your help

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1 Answer

The issue is most likely a bad bulb. If the light that you are getting is flashing red than most likely it is a bad lamp. If this is the case you are looking at probably $200-350 dollars.

Posted on May 10, 2008

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No picture comes up but tv powers up and the stand-by light blinks for about 3 to5 seconds, i also hear sound when i turn it on and change channels


If in shutdown the power light should continue to blink a specific number of blinks which is a error code.

This set is prone to bad picture tubes (has 3) so depending on code may be a fatal issue----sets will before flash bright red, green, or blue when this happens and shut off.

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the service light is blinking because you in fact need a new bulb also is why u have no picture

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No picture


(i) Disconnect all the cables from the TV including the power cable then reconnect them after a few minutes.
(ii) Make sure that the power cord from the TV is directly connected to a functional wall outlet.

If the standby light keeps flashing then service will be required.

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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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2 Answers

No power no lights good fuse...


Try a different power outlet? Possible shut down of DC supply due to short circuit can be heard if listen close at back of TV on plug in or power up with remote for a quick squeel then ticking sound or tick tick tick and nothing.

May 13, 2008 | Sony KP-43T90 43" Rear Projection...

1 Answer

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does the from led blink if so how mant times pause then blink again?

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1 Answer

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eight blinks means, "High-voltage error" and the probable cause location listed is, "T8005 is faulty (D board)". T8005 is the fly-back transformer assembly.

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