colored spots on display

You most likely have dirt particles on the CRT's. If you are good at tinkering with things you need to remove the screen to get at the CRT's and clean them.


Use either photographic grade cleaner or distilled water after blowing off loose particles with compressed gas. If you are not comfortable with this, you need to call a tech or a friend who can do it.


While you are at it clean the mirror as well.

It sounds like (at least) 2 of the picture tubes have burned spots on them. A yellow spot is caused by a burned spot on the blue CRT, leaving only red and green for that part of the picture. A magenta spot is caused by a burned spot on the green CRT, leaving only blue and red for that part of the picture. There may be a less severe burn on the red CRT that is masked by the colored spots you see on the screen.


There is no way to repair this other than to replace the affected CRTs. This could cost from maybe $500 to $1500.


BTW, LXI was Sears brand of TV. Most of their RPTVs were indeed made by Philips.


Robert