My CRTs have excessive brightness

[CRTguy]

I have two CRTs, a Toshiba CF27F30 from '96 and a JVC AV-2672S from '93. On the Toshiba set, it is only with brighter colors (particularly red, brown, green and yellow) that the brightness is excessive to the point that it hurts my eyes. I can somewhat compensate for this by turning down the contrast a lot but then the black levels really suffer and shadow detail is poor. I have used test patterns to calibrate both sets. So far, on the Toshiba set, I have replaced all of the electrolytic capacitors as well as the flyback and it hasn't helped. I have also reflowed solder to all pads on the neckboard and tested the transistors, diodes and large resistors with my DMM on the neckboard on the Toshiba set. I still have to get around to testing the small resistors on the neckboard.

My JVC set also has excessive brightness with brighter colors but it is with all colors and not just red, brown and yellow. I actually had to open the JVC set up and turn down the contrast pot on the main board to even get the picture to be somewhat tolerable without hurting my eyes a lot.

I have also experienced this excessive brightness issue on almost every CRT TV I have picked up that was made before the year 2000 (90s JVC sets I picked up were particularly bad). What could be causing this? It seems like there is more going on than just bad electrolytic capacitors. Can a shorted tube cause brightness problems like the one I am describing? Maybe it is a bad transistor, resistor or diode?