What is this?

[miniman82]

jr: The pattern is not exactly the same, the colored splotches move depending on which gun you turn on but the pattern is more or less the same. A red splotch becomes green, or a blue beomes red, ect. I know what you mean about the mask being out of alignment, but I've never heard of that before. I have not tried tapping the screen to see if they move, I'm hesitant because of implosion risks.

waise: Good question. The tube looks identical in every way to my CYP though, including the gun alignment. I'll try degaussing the neck tonight, though that will probably involve removing hte CRT to avoid demagnetizing anything else. I don't think it's the yoke, it seems to work as advertised.

Eric: The mods involve moving the red cathode to the same lug as green/blue, and a slight change to the chroma circuit (adding a resistor and ceramic cap to the G-Y amp). It has to do with the FJP sulphide tube having a more efficient phosphor than the CYP tube does. The literature also mentions adding a red screen control if balance cannot be achieved, but obviously I haven't been able to get that far just yet. Haven't tried removing the convergence yoke yet, I'll try tonight. I'm gonna hold off calling Scotty till I try a few things, I know he's pretty busy.

oldtvman: I know what you mean, but I trust that the tube was rebuilt correctly. Scotty did say that some of the phosphor on the screen had flaked off in a previous rebuild attempt, but it's not really noticable. With the set off, you can actually see a few spots where it's missing dots, but with it on it's not really noticeable.



Here's a question: could this be a total loss of focus? I don't really trust the focus rect in this set, and I have a spare I could try. My guess is that the screen would just be really fuzzy if that happened, and I wouldn't see much of anything at all. Just a blur.