Question about Sony KP-51HW40 51" Rear Projection Television

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When the tv is turned on it looks fine, but after a minute or so the screen fades to blue. whats going on?

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Posted on Jan 02, 2017

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SOURCE: Sony KP-51HW40 51 in. Rear Projection turns blue

Hello......
First reduse the G2 voltage for the blue c.r.t,and watch if the unit works for longer period (offcource blue colour will be not present).After reducing G2 voltage to blue c.r.t still behaves the same than c.r.t is faulty and you have to replace.
Pls count the red led blinking when it goes off,incase it goes to std by mode.
Gopali

Posted on Dec 14, 2007

  • 346 Answers

SOURCE: TV going Blue

malfunction of the convergence ics

Posted on Dec 23, 2007

  • 2318 Answers

SOURCE: picture comes on then fades to blue

Check the info from this website to see if you are able to fix your TV. You should turn the blue screen control down slightly counterclockwise. If that did not work, then more likely you have a video amplifier IC defective or a blue CRT.

Posted on Dec 19, 2008

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1 Answer

Picture comes on then fades to blue


Check the info from this website to see if you are able to fix your TV. You should turn the blue screen control down slightly counterclockwise. If that did not work, then more likely you have a video amplifier IC defective or a blue CRT.

Dec 19, 2008 | Sony KP-57WS500 57" Rear Projection...

1 Answer

KP-51HW40


sounds like the tuner may be going out on the set.

Aug 10, 2008 | Sony KP-51HW40 51" Rear Projection...

1 Answer

Blue screen


convergence ic and resistors require replacement and that you need to check for cracked solder.
http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html

Dec 28, 2007 | JVC AV-56WP74 56" Rear Projection...

1 Answer

Sony KP-51HW40 51 in. Rear Projection turns blue


Hello......
First reduse the G2 voltage for the blue c.r.t,and watch if the unit works for longer period (offcource blue colour will be not present).After reducing G2 voltage to blue c.r.t still behaves the same than c.r.t is faulty and you have to replace.
Pls count the red led blinking when it goes off,incase it goes to std by mode.
Gopali

Dec 14, 2007 | Sony KP-51HW40 51" Rear Projection...

1 Answer

SONY KP-57HW40


you are experiencing one or more of three things
1.the crt itself is damaged
2. the vertical ic on blue crt board is bad
3. the focus block is bad
if you hire a sony authorized technician they should be well aware of this problem.

Oct 22, 2007 | Sony KP-57HW40 57" Rear Projection...

1 Answer

FADING TO BLUE SCREEN


Sounds like you have a problem with the blue gun in your picture tube or its drive circuit. You might remove the back cover and gently tap on the neck of the picture tube using a plastic screwdriver handle while watching the screen in a mirrow. If the picture flashes back on or on and off then the picture tube is the problem. If this is a projection tv you have three separate tubes : red, green & blue. you'd need to tap the blut one.Gently!!!! Stargazer

Feb 13, 2007 | Sony KP-53HS20 TV

1 Answer

KEEP FADING TO BRIGHT BLUE SCREEN


I'm about 90% sure it is the blue picture tube developing an intermittent heater to cathode short. I'm surprised the set isn't shutting down shortly after this happens. A service call will tell you for sure as it could also be a bad solder connection causing a similar symptom. My own procedure to check it out would be to GENTLY tap the neck of the suspected picture tube with a screwdriver handle to see if I could get it to come and go (Or get out my CRT tester and measure it with the power off). Obviously by holding the screwdriver blade you don't want to accidently short anything out as there is about 33,000 volts a few inches away from where I would be tapping. Nuff Said.

Feb 11, 2007 | Sony KP-53HS20 TV

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