Question about Sony KP-57XBR10 57" Rear Projection Television

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Sony projection kp 57xbr10w screen blinking

The screen on my sony projection tv is blinking. there is audio but the video cuts in and out. then on the screen the display comes on. the LED light blinks 5 times. so it as to do with an akb circuit or some other circuit on the video board. but i dont know what to do to fix this problem.

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  • gleewright Sep 04, 2008

    I'm having the same problem, video cuts off then back on. LED is flashing 5 times. I'm thinking of opening the back and cleaning out any dust incase I've got a heat build up problem.



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If the video cuts in and out, chances are the Screen trimpots are not centered correctly in their proper range, relative to each other.

Sony does a balancing act whenever the set is turned on - there is a white line at the bottom of each CRT, and the current drawn on each gun must match the others, at least within a given range. If one is too high or too low or in any way vastly different from the others, the set will not allow images to hit the screen, they will stay blanked indefinitely, until the Screen trimpots are rebalanced correctly.

Mr Bob

Posted on Feb 04, 2008


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Sony kp-57xbr10w. Red light blinks 10 times . When you turn power on sound comes on . No picture . Then no sound and red light blinks 10 times . Help

Sounds like a highvoltage failure. might be the flyback or focus circuit too. oddly I cant find any useful info about 10 blinks.

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My sony kp 57xbr10w TV got screen color turning red, how to do with it?

The picture turning reddish indicates the red CRT is failing. Sony does not make the CRT Assemblies available anymore. What they want you to do is to send the red CRT assembly to them, (this includes the Optical Coupler), so they can mount a new red CRT on that Coupler and send it back to you. This runs about 300.00 a CRT and you have three of them. I mention this because if the red is failing, the blue and green CRT's are not too far behind. With the price of LCD sets falling, I do not think it would be economical to fix it.
I hope this helps,

Dec 11, 2010 | Sony KP-57XBR10 57" Rear Projection...

1 Answer

My sony kp-57hw40 projection tv picture is not as bright as usual. There is blue arc lines that show up at the bottom of the screen.

Projection TV sets have several common problems listed below.

Problem #1) Convergence


  • Screen Looks 3D
  • Colors wont align
  • Screen may look distorted
  • No Audio/Video - TV makes a chirping sound.
Problem #2 CRT Fluid has clouded over. Symtoms
  • Dull looking video
  • White looking video
  • Halos around objects
  • Red/Orange looking video

You can see some examples and find a fix here...


Feb 07, 2010 | Sony KP-57HW40 57" Rear Projection...

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Type in toolbar Understanding Sony Blinking Codes this will take you to Sony post telling what is wrong with TV depending on how many Blinks.

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Based on service manual info, it cant blinks 7 times as per symptoms, please count again blinks. It can be 5 times.
If its 7 times blink, Horizontal Deflection stopped in this case. If you want to repair it at your own, please let me know to guide you further but it is necessary you should have knowledge of electronics.

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how many times does it blink?

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Bad blue CRT................common problem.............T.

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Correct ! One set is for RGB focus and the other set is for
RGB screen voltage............................T.

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