Just how bad can an Ion burn be?

[Jon1967us]

The 12QP4 on my Hoffman 601 apparently has a ion burn spot and I'm trying to make sure it doesn't get worse (not too noticeable when images are moving on the screen and probably even less with the easy vision screen in front of it)

Looking in the Riders, the instruction for "beam Bender" adjustment are confusing. It says to point the arrow forward, toward the 2nd anode and away 180°! I have no clue what this contradictory statement means. Does that mean point the arrow toward the 2nd Anode and then rotate the trap 180°?

I just adjusted it for maximum brightness. Seams like that would be sufficient?




https://youtu.be/bKE7tG01_xo

[decojoe67]

My bakelite and wooden 49-701 and 702 7" Philco's both have the same mild ion burn. It's suprising because I never saw it on a 7" model before. The only other set I ever had with it is a Dumont "doghouse", but it's common with them. The burn is hardly noticeable watching something and hardly distracting. I figure if I was 70+ years old I'd have some dark spots too!