Question about Philips 28PW9536 28" TV
I have a Philips PW9527 CRT set which is about four years old. Recently, it has developed thin blue lines across the screen about half an inch apart which get closer together near to the top of the screen. These lines are across the full width of the screen except for across the middle where they start about an inch in from the sides. Also, the picture has a decidedly blue cast to it with blacks looking navy. I have adjusted the colour, contrast and brightness which doesn't help. The tint setting is set to normal and I have tried turning off all the picture enhancement features as well as disconnecting all peripheral devices. There are no speakers close by or any other electrical equipment. Any suggestions very gratefully received!
Those lines sound like "retrace lines" and several things can cause them. The most common are shorts inside the picture tube and shorted semiconductors in the video driver circuits. They can also be seen if the blue screen voltage is too high or if someone has tampered with the screen voltage control.
Posted on Jan 21, 2007
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