The 61HS10 is a 4:3 CRT RP HD-capable TV. It is subject to burn-in when watching a lot of 16:9 in widescreen mode, with that burn-in being in the form of having the black bars at the top and bottom of the screen not being used as much as the middle of the screen, and so they gradually don't burn down as much and become brighter than the middle.
If you still watch a lot of 4:3, then the burn-in rate will be slow. If it has a "gray bar" option where you can set those top & bottom black bars to display a medium gray instead of black, then that will also slow the burn-in rate.
Or you can elect to fill the 4:3 area with the HD image by zooming in (and cutting off the sides) or stretching vertically (and making everyone taller and thinner).
Personally, I would find some zoom mode I could live with and would watch some stuff in that 4:3 "fill" mode. But on good movies or top notch HD quality material, I would watch it in 16:9 with the black bars. Damn the burn-in and full speed ahead! Just make sure your settings for brightness and contrast are not overly high.
Nearly all of these sets (HD 4:3 CRT) internally convert 1080i to 810i for displaying widescreen 16:9, as they can't display 1080 vertical lines between the black bars. This set has a 960i mode, so perhaps they found a way to compress the spacing between the lines and display 1080i in 960i.
Theoretically your best picture should be produced with your receiver set to 1080i output, so that it is not downconverting to 480p. But on an older set, it is possible that the scalers in the TV aren't very good, so it is worth testing 1080i vs 480p output from the 622.