CRT for Hitachi CT1342?

[kc8adu]

do you have a bulk tape eraser?
a weller soldering gun?
spikes and failed degaussing thermisters can magnetize the crt and cause what you have.
could be a chroma issue too.
try turning up the bias on 1 color and see if that color actually increases.
so if you crank up the blue bias and red increases you know you have a purity issue.

[asynchronousman]

Refine your definition of "turning up the bias" please. It has color, hue and tint if anything and an AFT/color/contrast type switch. I do know that when you adjust for the "best" color picture the bright "blue" screen generated by many VCRs is blood red and green is more bluish. It took some effort to prevent it from looking like "Halloween" or two-color process movie films, which is why my original beliefs have leaned towards a bad gun. If I recall, it may affect colors in the way you've mentioned. I also recall the the color was much better when I bought it at a yard sale 3-5 years ago.

[kc8adu]

Originally Posted by asynchronousman

Refine your definition of "turning up the bias" please. It has color, hue and tint if anything and an AFT/color/contrast type switch. I do know that when you adjust for the "best" color picture the bright "blue" screen generated by many VCRs is blood red and green is more bluish. It took some effort to prevent it from looking like "Halloween" or two-color process movie films, which is why my original beliefs have leaned towards a bad gun. If I recall, it may affect colors in the way you've mentioned. I also recall the the color was much better when I bought it at a yard sale 3-5 years ago.

turn the color all the way down.
on the crt socket board you will find controlls marked drive and bias or background.
the bias adjusts the background and the drives the bright areas.
there is a drive and bias for each color.
if you turn up the red bias and the background goes red its not a purity issue.
try to borrow a degausser or bulk tape eraser and degauss tht tube.
looks more like bad purity in the(poor) pic you posted.

[asynchronousman]

Ok, so I'll have to take the back off. I hope if it's interlocked like my tube sets are that the Norelco cord will work...degaussing is something the vacuum/TV repair shop on the other side of the tracks will have to look into, though. We are absolute newbies here. Enlightened, not skilled.

By the way, that was the BEST picture a 300 KILOpixel VGA imaging unit will take with no flash and no light in the livingroom (burnt out) using a fluorescent tube fixture as backlighting(the kind you mount under a hutch). I didn't have a scanning sync problem with it like I did in the bedroom on the Trinitron, either, but the colors were correct.