I have had my SR3000 Sears B&W television for about 3 years now, and it has never been blurry, until about a month ago (https://imgur.com/a/10rg9lN). I didn't think anything of it, maybe just a small fluke, but it hasn't cleared up. Is there any reason for this? I have pictures attached, it may not look blurry, but it is in person, and it was never like this before. Let me know thanks.

There may be a hole in the back of you may have to remove the back, but there should be a focus adjustment, likely on the flyback.

Hopefully the adjustment has drifted. If it's an electrical issue someone else will have to help you as I usually don't work on sets that new.

If it gets better as it warms up its usually the CRT.
Odds are it does not have a focus control.
You can pull the back & see if the HV transformer has any cracks in it also.
But odds are bad CRT.

73 Zeno:smoke:
LFOD !