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Picture is up/down klv26bx300

Picture comes and goes

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We need to replace the Mainboard on our Sony Bravia KLV26BX300 due to a lightening strike. Grateful for ideas about where we can source an A1782846A mainboard or equivalent?

Contact the authorized service center for Sony. They only can provide a genuine board. If you wish to get some details; visit the site linked here. Pull up older posts.

Feb 14, 2017 | Sony Televison & Video

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Hitachi 57s715

It is a rear projection with 3 picture tubes.

If the power light comes on and stays on but no picture/sound the trouble is likely in the power supply.

This set like all Hitachi projection sets before it going back to 1991 has several led's on the board (power) that when with the back off and you plug in should be lit. At turn on you watch them all to see if they come on and if one goes out first before the others--all should dim down and go out together if set unplugged. There is also on most versions a red one that is on all the time.

The red is tied to where the voltage first inputs the set. The others are each connected to several different lines coming out of the set's power supply. If one does not come on or goes out last it indicates a problem on that voltage line---for example a 24 volt line goes to convergence (2 of those lines and one + and one - voltage.)

This is how to narrow down what is happening. If the red one does not come on at all (almost all have that one) none will and that one means right where your house voltage comes in something is wrong.


Apr 20, 2012 | Hitachi Televison & Video

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Picture is not horizaneal rirht side angeled down

my first instinct on this is the mirror inside has come loose. or possibly brpken. can you describe the picture. angled down? let me know how it goes

Feb 26, 2011 | Mitsubishi WD62628 62" Projection HDTV

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47in Phillips-tv picture goes black still has

Could be the signal board has a bad cap, in this case it sounds like you are getting intermitten power to the inverters....when the tv goes down and of course you have audio....Shine a flashlight on to screen and see if you have a picture...look carefully. If this is the have the above problem!

Nov 23, 2009 | Televison & Video

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Toshiba 52Hm85 shuts down after 40 minutes & goes on and off

Only a few things could make the picture freeze and shut down. I would recommend checking the DVI cable that goes between the Chassis and Optical Block to make sure it is secure and tight. If it is (and it probably is), most likely it is the Optical Block causing the problem.Because of the cost involved, I would have a Professional to come out and diagnose it to be sure.
I hope this helps,
Sky Assoc

Aug 25, 2009 | Toshiba 56HM66 56" Projection HDTV

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MY problem with Sony KP-53S35 53 in. Rear Projection Television. When the TV powers on, the red light blinks until the picture comes on, then the red light blinks go off. I had to wait more than 5 minutes...

the number of flashes of the red indicator lamp points to the possible cause of the delay of the raster or picture, but usually it's an indicator of an emission unbalance between crt(picture tube) guns. the picture will take longer to show up as the emission on either of the picture tubes goes down.

Jul 27, 2009 | Sony KP-53S35 53" Rear Projection...

1 Answer

Sony Grand Wega KDF-60XS955 Picture comes on and then goes off.

You have a bad lamp. Sometimes when the lamp gets old, it doesn't fail and open like they usually do. Instead, the reflector gets cloudy, and instead of reflecting the light, it converts it into heat. As the lamp heats up, it draws more power, eventually to the point where the TV senses it drawing too much power and shuts down, going into a reset cycle. replace the lamp and use an original Sony lamp, as the aftermarket lamps are known trouble makers. Be sure to rate this solution. Thanks!

Dec 13, 2008 | Sony Grand WEGA KDF-55XS955 55" Rear...

1 Answer

Is my picture tube going?

Hi there yes this is a common problem with old tube tv's and yes eventually stuff seems to break down there is not alot you can really do about it to be honest suggestion is that this is lifes way of saying upgrade ...this tv has done well ....if your looking to upgrade i would suggest going to a Samsung LA26C450 as a replacement television or if you are not so much a fan then a KLV26BX300 as a new option ,


Nov 04, 2008 | Samsung TXK2754 27" TV

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