Not likely . Sound like you have vertical overscan problem due to a capacitor or two going weak. If you continue to run the tv with this as your problem your vertical section more...
Sony FD Trinitron WEGA KV-36XBR800 36" TV - Troubleshooting
to a component failure causing the beam to not be driven all the way to the top of the screen. Usually there is enough overscan that you would not necessarily notice the picture being smaller than the crt. When this happens the horizontal scan lines, which have not decreased, more...
Sony FD Trinitron WEGA KV-36XBR800 36" TV - Troubleshooting
on the bias and 32 on the drives. and the raster line is dark. as well as some of the other screen settings like overscan widths..I just need to set that up. I redid the overscans sizes. and i got the colour and picture somehwat viewable. not to bad. more...
Sony FD Trinitron WEGA KV-36XBR800 36" TV - Troubleshooting