The picture will turn all Blue or stay in black and white.
when it's blue it is unwatchable and hurts the eyes.
my TV is 5 years old.
Sometimes right after I turn it on it will be fie and then for no reason will turn blue or b and w.
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More info would be nice. Are you using HDMI or Component cables. If it is component cables (red, blue, green for video white and red for audio) Check your red and blue connection. Green alone will give you a black and white picture. If you are using an HDMI cable, replace the cable to see if this changes anything or if you have another tv swap cables to see if problem stays with tv or moves to another tv.
If you turn color off and stand back and examine the screen---if it is not black and white but yellow looking you have bad Glycol in the blue picture tube which is quite common.
Easy way to know for sure is with set on and rear cover removed peek with a small mirror at the three lens---don't touch anything with the set on===each tube red,blue, green should have a picture with the set on.
Likely you will find the blue one looks like a floodlight with little or NO image/picture.
Hi, KP-51HW40 shuts off due to incorrect white balance and blue arch lines is an evidence of that incorrect white balance. I hope tv standby red light would flashing 5 times then 3 seconds pause and again 5 times when tv shuts down. This is rear projection tv that has three picture tubes (red-green-blue) inside to generate picture that projected at front screen. These three picture tubes must be drive with correct drive voltage to produce good picture of each color. Solution for your tv problem is Screen Voltage adjustment that can be done easily if you are handy with electronics stuff repair. Let me know your expertise level to guide you more and if you feel unconformable by tv repair then local tv repairman will help you to adjust white balance in tv. Hope these info will help you. Let me know if you have additional questions. Thanks.
Since you don't have any white lines with the red screen/picture I would say that the red bulb (CRT) is conducting too much. There is an adjustment control for that. The 'sceen' control is behind the speaker cover and service cover. Turn red screen control slightly to the left until you get a good black and white picture.
you have what they call guns in the back of the tv blue/green and red and sounds like they have came out of adjustment. as far as the picture being black and white you should get a tv technician to check it
go into menu turn color off see if you have a black and white picture if not adjust red,green, and blue screen drive on controls in back of tv you have red, green, blue it will have focus /screen controls cover each tube do one at a time blue focus and screen drive adjust to clear blue picture do all 3 tubes, then adjust them to where you have a black&white picture once this is done turn color controll back on.Thank You for using FixYa and Have a Nice Day.