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

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Sonykp57hw40 the re d and green tubes stop working after a couple of minutes leaving a blue screen which goes out a few minutes later. how do i fix my TV

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Sounds like the blue CRT is shorted and thats what is shutting down the set.

Posted on Jun 07, 2008

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Can dust build up on a picture tube's circuit board cause them to overheat and shut the tv down.


dust will not cause an issue like this in this type of set--RCA? it means a short of some type exists and the set shuts down or blanks the tubes--all you have described as far as appearance is normal.

RCA sets like this can be difficult to repair and also if you Google the model number you will see they have a lot of "problems".

Apr 23, 2012 | Projection Televisions

1 Answer

The screen turns blue after about 2 minutes of turning on the TV


Sony TVs has an Optical Block issue. If there is an issue with the optical block, then there will be green, blue patches or tint on the TV display. Try resetting the TV to the factory settings and try Power resetting the TV. Turn Off the TV and remove the power plug from the wall outlet for 1 minute and reconnect it and check the operation. If the issue still persists, then TV may require service. You can contact the Customer relations team and check for the available options. Sony had repaired free of cost for such issues. Hence, contact the customer relations.

Jul 25, 2010 | Sony KP-57HW40 57" Rear Projection...

1 Answer

I own a KP-57HW40 set that has a color and shut off issue. Started as a green tinge problem to the screen after watching for a few hours. Started becoming more and more frequent a couple months ago....


IF YOU HAVE A RA 6 CHASSI THE TUBES RUN HOT ANOID CATHOD SHORT IF YOU TAP ON THE NECK OF THE TUBES AND GOES TO SOLID COLOR THEN SHUTS OFF YOU HAVE TO REPLACE THAT TUBE ALL 3 TUBES WILL HAVE THIS PROBLEM

Feb 09, 2010 | Sony KP-57HW40 57" Rear Projection...

1 Answer

After the tv is turned on it turns off 3 or 4 times after turning it back on and the screen turns blue for a few minutes before becoming clear. It lasts longer each day.


Many of these sets had problems with bad picture Tubes--they use a red, green and blue crt. Most commonly the blue gives troubles--The tubes are now only available on a rebuild basis--usually not worth doing as the cost is very high.

You may have a bad blue picture tube but there is a way to deal with this first----the set has a black plastic block with six controls---three are Focus(red,green,blue) the other 3 controls are Screen controls(red, green, blue)

Someone has to remove the entire piece on the front of the set below the screen(usually a plastic part) most of the time it is secured with 3 screws on either side of the set in the back; once you remove the screws the entire piece should pull out(pull from right to left(it will not fall off or come out easy--it is held in with several large plastic pegs) With it removed there is an inspection plate with 4 screws-----the screen/focus block is behind it.

You need to look very closely at the block to identify the focus versus screen controls----one row left to right will be marked Focus and the other row left to right will be marked screen------YOU need to locate the Blue Screen control (they are black like the block) With the set on(be careful) go to a video input clip_image001.gif with nothing connected---if you see a blue screen as well as the input number turn the BLUE SCREEN CONTROL SLOWLY TO THE LEFT UNTIL THE BLUE is gone.

If this cures the problem you may only be buying yourself some time----if the blue picture tube is bad sooner or later this trouble may return----I have seen sets where this was adjusted and the set worked for a year or more with no repeat of the trouble----replacing the blue tube would likely cost you 400 -500 parts and labor.

I do this here for free so if this has helped you rate this solution.


SD TECH

Dec 11, 2009 | Sony KP-65WV600 65" Rear Projection...

2 Answers

Screen goes all blue


if it is a KP65ws500 it is one of a group of sets made by Sony where all the picture Tubes(set has a RED, Green, and Blue Tube.) ARE BAD. Most of these sets had all three tubes replaced during a program Sony had. The tubes are NO LONGER AVAILABLE---the only way to get one is remove the tube and send it out for rebuild---most of these cost about 250-300 just for the tube.

The set is shutting down because when the screen goes bright blue it detects one of the CRT's(tubes) is pulling way to much current.

The problem with Replacing your Blue Tube is cost and----sooner or later the other two(red and green) are going to fail also.

best advice is maybe not to fix it.

I replaced dozens of the tubes in these sets when Sony had a recall and provided the tubes for free and paid for the labor etc.

I know I am not giving you good news but I do this here for free and if this has been helpful give me a vote here. Thanks!

Aug 20, 2009 | Sony KP-65WS500 65" Rear Projection...

2 Answers

61'' SONY Rear Projection KP 61HS10 blinking


My Sony HiScan 61" intemittent black screen for couple of seconds. I opened the back and look at what is happening. All three blue, green and red projection lights go off for a second or two frequently.

Anyone know what is the fix.
thanks
James

Mar 25, 2009 | Sony KP-61HS10 61" Rear Projection...

1 Answer

The image leaves and the screen goes black.


Either the picture tubes are going, or they are dusty. Take apart the front grill and take off the black cut away behind the grill. Inspect the tubes and the circuit boards. If they are dusty blow them off with an air can duster. It might work and its free and takes 5 minutes.

Ben

Mar 23, 2009 | Sony KP-61HS10 61" Rear Projection...

1 Answer

Screen goes gren


you probably need to replace the red and blue tubes to make it work right again

Sep 04, 2008 | Sony KP-51WS500 51" Rear Projection...

1 Answer

BLUE SCREEN THEN SHUTS OFF


cause: tuner i believe will cause tv to not find channels turn blue and turn itself off

Aug 18, 2008 | Sony KP-51WS500 51" Rear Projection...

1 Answer

Picture turned green


It sound like a bad tube there are three tubes red green and blue.
i suspect the blue tube is bad. tubes cost 160.00 plus labor 450.total . sometimes the tubes
can be fixed or the tv tech can adjust the screen voltage on the tube.


good luck thanks jay leadingedgeelectronics.com

Apr 29, 2008 | Philips 60PP9202 60" Rear Projection...

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