Question about Sony KP-51WS500 51" Rear Projection Television

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Red fade, red flashes screen turns off followed by tv turning off.

The tv will turn on for around 10-15 seconds, then the bottom will start to fade red it will then flash red, sometimes with kind of a zzz sound kinda like a hiss, then it will shut off.. or it will stay on but the picture will not show only the audio. i tried the easy fix on simplylife board where you adjust the voltage screw, this did not fix the problem, it would take the red fade out but the screen would flash red and shut off still at the same times. im good with electronics just never worked on a tv before, but i am interested in fixing it myself, im can solder and check for voltages

so my question is, what is wrong and how would i go about fixing it. i have read and see mixed answer to, there is a short somewhere in the wiring to, there is a short in the bulb to, there are bad parts on the d-board .

tv also flashes 8 times when it shuts off. i would appreciate any assistance in this matter as it will hopefully be a christmas present to my father in law.

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Re: red fade, red flashes screen turns off followed by tv...

Replace HV block when self-diagnostic LED blinks 8 times =
Sony part # 8-598-955-32....if that doesn't cure it, the red CRT
would be next..................T.

Posted on Dec 22, 2007

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Screen fades to blue.

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1 Answer

Free big screen, is it worth it to fix?

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TV Problem with shutting off by itself

Mine just did the same thing.  Except for it was green instead of blue.  The service manual states 8 flashes from the light stands for an overvoltage.  After reading the manual for a bit I realized the bottom row of 3 adjuster screws from behind the speaker grill adjust the output for the red, green, and blue colors.  BEFORE OPENING ANY TV OR MONITOR PLEASE KNOW THAT THE VOLTAGE INSIDE CAN KILL YOU EVEN IF UN-PLUGGED so please be careful and only adjust what is mentioned here.  I un-plugged the tv, removed the grill and the board covering the internals, and carefully turned the 3 adjustment screws all the way down.  I then waited about 10 minutes (don't know if this made a difference).  I turned on the tv, turned the channel to an auxilary input (for a black screen), and slowly raised each of the 3 bottom screws one by one up clockwise until i could see a faint green, blue, or red line (depending on the screw), and then turned each one back a hair until the screen was black again.  Only adjust one at a time, the order for colors are blue, green, then red from the left.  I hope this fixes your problems.  Be careful when working inside a tv,  I suggest not using a screw driver to adjust the screws due to the possibility of it slipping and someone getting hurt.

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Picture then fades to blue.

Please post me on this as well. My Sony just turned 4 yrs this Jan and just last week it started having the same problem. -Thanks!

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