Update. I've gone from severe depression about this after another pass over most of the screen, thinking that I had let the visible but "minor" annoyance of the 3 relatively small bright spots where I'd cleaned in the past...... put me in motion with actions to where I just screwed the pooch
with my custom made and ordered, fitted and irreplaceable 2.8 screen. Really pretty sick about it. Then one more experiment and this is giving me hope as it is getting better.
After the very careful, smooth, wet passes this time, really trying to feather any edges so no marks from any thickness of the alcohol rapidly drying at the edges of the wet swipes.....I had improved the bottom some but still
have these marks. By now obviously the surface seemes totally clean up close.
Think of a very faint pattern, horizontally (direction of all the swipes except vertical left and right edges) on the white screen kind of like the patterns you see with many colors on Jupiter.
"Very faint" but "very visible" in white, yellow, green, cyan somewhat and even red somewhat with the JVC test menu.
Then I'm up close and looking at some of those horizontal marks and imagining they are not
from the edges of the swipes or still remaining coloration from surface film any more (looks really clean up close, can only see them easily from a bit of distance back) ....... but actually the minuscule, tiny differences in the clear coat's surface. NOT GOOD if true. From the careful wipes and flicking at the occasional bug over the years. And this new bright surface cleaning is now bringing all that out. In other words I'm BLEEPED. Any time there's a bright large area of screen during programming ......faint Jupiter pattern visible.
I thought I would try one more experiment to see if I could now possibly "alter"
any of them by going over again, lightly, quickly, wetly and with same feathering directly on some of these specific patterns.I could change them!
OK, so with remaining liquid (actually still the quart can) ....... I did some more large areas bottom half of screen again as the top still seemed a little
more uniform. Very light sweeping, wet rag so no friction, long swipes, again feathering.
The patterns Change
. And overall they are getting lighter and more uniform looking. Still not acceptable, but now with the other light colors besides full screen white, it's getting harder
to see the patterns. Red, hardly at all. So that's a very good sign it seems to me. The fact I can change the patterns and they seem to be getting more faint seems to indicate the clear coat is still in OK shape.
I bought the version of denatured alcohol below at Lowes on the right side if this link works. (Didn't even realize there were 2 or more versions) Do you think maybe that is the problem when you compare their properties? What brand do you use, Doug?
Now I'm seeing what I bought does better with shellac, rather than oil based product like the one on the left. But it is also supposed to do well on glass for no streaks. But you dilute it with water according to directions. Is this the Eureka moment?