Question about Sony KP-57HW40 57" Rear Projection Television

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Green screen My Sony KP-57HW40 television is giving me trouble. When I turn my tv on, the picture starts to turn a bit green, then starts to blink a bit, then the screen turns bright green, then turns black, then turns off. This all happens in a one minute period. We purchased this television in July 2002. Paid over $3000. Any advise will be appreciated. Worth fixing?

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  • Anonymous Apr 17, 2008

    Green bulb comes on then red and blue. Picture normal for 10 seconds. Green light golws bright and red andd blue turn off then Green goes off and screen is dark. still have sound.

  • James Kilbride May 14, 2008

    Have the exact same problem and purchased it around the same time in 2002.

  • BillyVette May 17, 2008

    I have the same exact problem and also purchase unit Sept 2002 !

    Has anyone tried replacing the "green crt" as suggested?

    If so...did it fix the problem ?

    Thanks !

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  • 121 Answers

Sounds like your green crt is shorting let me know if you need more assitance or if you would like to know where you can purchase a crt at.

Posted on Apr 12, 2008

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Hi i have a kp-57HW40 sony projection tv. Right now it is failing, and when I turn it on I hear multiple clicks. The screen will not even light up, just stays black as it if were powered off. On the...


Thats the error for having a issue with the +5V which can be caused by either the A board or the B Board with the B board being the most likliest cause.

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Have Sony Model# KP-57HW40 Big screen rear projection tv..Has blue wavy lines across screen, and sometimes flashes blue, can you give me assistance??


Blue Picture Tube , bad Video IC on Blue CRT board.Or Blue screen drive control to tube needs to be adjusted down some.

Most Likely Bad Tube!

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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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i have the same problem picture is blue/green with blue and green arched horizontal lines

no picture at all only sound then tv shuts off after 5-10 seconds and then a bright blue flash in the center of the screen

have tried adjusting the voltage screws didnt do anything

Jul 13, 2008 | Sony KP-57HW40 57" Rear Projection...

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Sounds like a convergance amp problem or possibly the S.D.K.'s are going out

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FIVE Blinks---AKB circuit (AKB), the timer/standby indicator blinks for about
30 seconds then goes to the self-diagnosis function. Something is wrong with
the video. Check video out, Q705, 732, 761 and other components on the C
board, also check Q218, 219, 220 on the A board. Also unit be in IK blanking,
try turning up screen slightly.

Feb 19, 2008 | Sony KP-57HW40 57" Rear Projection...

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Bad green CRT = common problem..........................T.

Oct 10, 2007 | Sony KP-57HW40 57" Rear Projection...

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Green pict and turn off in 10sec


Rod,It sound like you have a Grid to Cathode short in you Green Gun Contact me when im online and Ill be able to Help you ttech

Jul 24, 2007 | Sony KP-57HW40 57" Rear Projection...

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