CurtPalme.com Home Theater Forum

[lyd]

I commented on this in the finding tube center thread, but I am kind of stuck until I figure out which way to go with this, so here's a new thread with a pic.

I tried using my marked center point to align on the center of the grid (shifting the focus yokes), but all the patterns seemed to be too far left when I was done, if looking at the distance to the edges of the tube.

So I hit # a few more times until I came to the solid pattern, then readjusted the yokes until those appeared centered relative to the edges. This seemed fine, but when I was finished I flipped back to the grid and turned the brightness way up, just for the heck of it mostly, I expected the grid to be the same width as the raster. Imagine my surprise...



What's this on the left? When the grid and/or slug were centered, this "extra" bit was off the phosphor. I reduced the width until it was back on then took this pic. I don't know what to center to now, grid or the whole light area I see when I turn brightness up. Can anyone help?

Thank you.

lyd

[Tim in Phoenix]

Hello

It will not matter since none of your video sources will be as wide as the lit grid.

[lyd]

Thank you for the response.

That was my understanding, my only concern was that if what I was seeing meant the grid was not where it was supposed to be, then I might have differing results with my sources.

So you are saying maximize and center on the grid, and ignore this "runoff" part I see with the brightness cranked?

lyd

[Tim in Phoenix]

[lyd]

Thanks. That's what I did and it seemed to work out great. By the time I finished the astig magnet adjustments and popped up a grid with all three colors, it seemed like I was almost there. It looked about 80% converged just like that.

Unfortunately, as I've progressed through the electronic portion of the setup it has become apparent that I have some problems, the biggest one looks like bad physical alignment of the projector to the screen. I've now wound up with the grids shifted pretty well off-center, and pretty damn close to the phosphor on one side, with one tiny corner clipping off the edge.

I'm pressing on, with just scheimpflug and final convergence to go, hoping that the actual image will be a bit smaller as you said, and I'll squeak by, but clearly I am going to have to do this all over from the beginning at least one more time.

That's okay, I'm learning a lot and will surely do better in subsequent attempts.

lyd

[AnalogRocks]

[AnalogRocks]