NNC Toshiba PF colors unbalanced

[mv1f]

I’ve got two NNCs each with a Toshiba PF and each of them had colors “unbalanced” in their own ways. Basically if I go into a color test I’d see some of the colors falling off faster than the others. The worst of the two had the red dropping off way too fast while the other was at least tolerable.




I went into the extended color menu and messed with the individual color gains but that left me with nasty bleeding and thus a gross blurry image.



(this is the other monitor where I boosted b-gain and g-gain but it’s the same for the other monitor just with red)
How can I fix this? Can I even fix this?

 

[mv1f]

Added pictures

 

[Hatsune Mike]

If the colors bleed when the gains go up, first turn the biases down for all channels, and bring up the flyback Screen / G2 control until you can see the black area, then back off a bit. This might give you more usable range, in case the streaking you are seeing is peaking during preamplification.

From your photo, I'd say it looks like G2 is a bit lower than it should be, in any case.

Otherwise, if doing that doesn't help, your tube's emissions might just be poor.

 

[nonosto]

maybe before touch flyback, try this protocol, with my Toshiba PF I succes to set it perfectly.

https://wiki.arcadeotaku.com/w/How_to_Correctly_Set_Up_Monitor_Colours_and_Brightness