PHILLIPS Model #: TR2503 C121, Chassis #: 25F800 7583, Date Code 14190092E Sept 99.

Screen Focus is GOOD in the CENTER of screen,, It Is visually misalligned around the edges where the color looks like it is Fuzzy and 3 Dimentionally layered looking. Is this refered to as Horizontal Noise? and there is a buzzing noise. How Can it be Corrected?

Barry Vincent, January 2005

Try replacing the yoke.

Jeff, October 2005

Has the TV received a physical shock, possibly dropped?
The symptoms provided seem consistent with this.

The color problem sounds like the convergence is out of alignment and the buzzing, (if a low pitched harsh buzz) would indicate loose scal coils or other loose coil.

Both the convergence magnets and scan coil yoke are adjacent to each other on the neck of the cathode ray tube.

Most modern crt's convergence is non adjustable, factory set and sealed. In any case, if adjustable convergence magnets were found on the tube neck, they also should be already set and sealed as would be the scan coils.

If it is convergence error the individual colors red, green and blue will be visible outlining the images. Focus is always less perfect at the corners of a picture than the centre and misconvergence will make it appear worse.

Large patches of incorrect color at the edge of the picture could be due to a magnetised tube, usually due to failure of the Positor (an inexpensive component). This sounds a bit more serious.

Cobweb, January 2005