Found a Sony KV-1215 portable

[fujifrontier]

Originally Posted by zenith2134

If I'm not mistaken, the yoke magnets control static convergence as with most conventional crt designs, but a trinitron tube has a couple more magnets involved. Honestly unless there is a known convergence issue, I wouldn't worry about it too much. And mostly every repair topic for crt tv's is included in that f.a.q. , so maybe it will help. Are you getting the set?

Yes, but I won't be able to pay for it until next week.

The reason I ask about vert convg is because my aunt bestowed a early-to-mid 90s RCA ColourTrak (a GE chassis judging the OSD menus, and front buttons) on my grandma.... the picture is absolutely blurry (they told my grandma "IT LOOKS PERFECT LOL") even with Sharpness at max. It also has a bit of shininess in high-contrast areas, and the classic red-orange smearing/out of convergence smearing. Where would i start with this one?

[zenith2134]

Hi again. On the colortrak, There should definitely be a clearly-labeled Focus potentiometer on the crt neckboard or on the flyback itself. If its bad enough so that the focus control has hardly any effect, The crt is weak, or you have lost focus voltage (more unlikely, however). As for converging, you are forced to play around with the yoke magnets, since these sets only have provisions for static convergence. I highly doubt the service menu includes convergence. Maybe someone else knows? I, too have seen many people enjoying a set with a terrible picture. Most don't even care anymore. My aunt's RCA 25" has bad focus too and she won't let me adjust it because she fears I'll "break-it". lol.

[fujifrontier]

Originally Posted by zenith2134

1. There should definitely be a clearly-labeled Focus potentiometer on the crt neckboard or on the flyback itself.
2. As for converging, you are forced to play around with the yoke magnets, since these sets only have provisions for static convergence.
3. I, too have seen many people enjoying a set with a terrible picture. Most don't even care anymore.
4. My aunt's RCA 25" has bad focus too and she won't let me adjust it because she fears I'll "break-it". lol.

1. If she lets me, i'll definitely look into it.
2. those are the purity rings, correct?
3. my parents Hitachi bigscreen is developing a pronounced red push and they don't even care.... they're wearing that damn CRT and they won't let me do anything about it
4. yeah, i have a feeling gram won't let me touch the tv

[andy]

Originally Posted by zenith2134

Hi again. On the colortrak, There should definitely be a clearly-labeled Focus potentiometer on the crt neckboard or on the flyback itself. If its bad enough so that the focus control has hardly any effect, The crt is weak, or you have lost focus voltage (more unlikely, however). As for converging, you are forced to play around with the yoke magnets, since these sets only have provisions for static convergence. I highly doubt the service menu includes convergence. Maybe someone else knows? I, too have seen many people enjoying a set with a terrible picture. Most don't even care anymore. My aunt's RCA 25" has bad focus too and she won't let me adjust it because she fears I'll "break-it". lol.

Most RCAs don't have any convergence rings. They use a permanent magnet where the rings would normally be. Also, the yoke is probably glued to the neck of the CRT. RCA did it that way since they first started making in-line CRTs.

[fujifrontier]

:x yeck