Hello. I have had this television for four years, and have been pleased with it so far. It is a little sensitive to magnetic fields (I had to move my receiver and speakers way away from it to eliminate some green spots on white fields.) I recently purchased DVE, obtained the service manual, and adjusted it accordingly. This involved reducing the overscan to approximately 3%. Now I noticed that the right edge of the screen moves noticeably. On all dark screens, the right edge will move in a distance that approaches a centimeter. On screens with variable brightness, the scanlines which have more white are wider than on those with more dark. Also the average level of the previous lines affects the next line, which manifests itself as clipping the right top corner of a letterboxed movie. Also on the overscan bounce test and the pulse line patterns the performance is not very inspiring. I understand from much reading that this is related to the high power requirements of bright screens causing the beam to be weaker, resulting in the deflection circuit being able to bend the beam away more from the center of the screen. I also understand that this is related to poor voltage regulation from a poorly designed or malfunctioning power supply. My question is whether this is typical of this midpriced $400-$500 tv? Can I check this myself with a multimeter or is this too advanced or dangerous for a electronics novice?
- posted
18 years ago