CurtPalme.com Home Theater Forum

roaddog · Joined: 09 May 2006 Posts: 32

Hi
Had a great set up going for nearly a year and now I am having focus issues as well as getting my lines in the grid pattern to line up. After I do a refresh of my set up and save it it seems that certain areas drift out again when I cycle the power.

First the focus issue,certain areas of the screen now seem to be out of focus not sure why. I believe related to the drifting setup..

I have shifting of the red and blue. I can make it better then save it( hit memory) but the next time I cycle the power it is back to the misalignment. It is mostly the blue, in some ares when I try to realign the zone I am at max or min range and cannot fix it. If I put up the grid pattern on,the very middle horizontal line the 2nd from the right side vertical line intersection the vertical line is bent on all guns same for the left side but it is the last vertical line on the outside. I can post a pic if that helps explain it better. Is it possible a board is going? I have not had any problems with this set or errors before. It has around 3800 hours on it.
Thanks for any suggestions.

**Curt Palme** · Posted: Sat Jan 03, 2009 5:17 pm Post subject:

You have a poor basic setup if your zones are at min or max, no question about it, and that can cause drifting. Put all zones at 128, the factory midposition, and use all controls save for the zone controls to get the pix to be very watchable. You should be able to get it within 2-3 test pattern line thicknesses for all colors to converge. THe only zone control you will probably use is the 'zone 1' to center the tube rasters on the tubes, and the vertical zone 1 adjust to get the center V positioning lined up.

Once everything is tweaked as good as you can get, only THEN use the zone adjustments for fine tuning.

**AnalogRocks** · Posted: Sat Jan 03, 2009 5:38 pm Post subject:

I agree with Curt. I have a D50 setup and you need to centre it and square it to your screen, I only use 3 to 4 clicks of point after getting the other controls ligned up.

roaddog · Joined: 09 May 2006 Posts: 32

Guys thanks for the suggestions. I did do a scratch setup initially from 128, I bought Grahams dvd watched it 3 times and followed it step by step. That's what I meant about a solid setup. Friends with G70's commented on how great it looked.
But somehow that went away and now I have this mess. Could it possibly be something board related?

I can redo a scratch setup, but it seems strange that it would go to hell on it's own.

**AnalogRocks** · Posted: Sat Jan 03, 2009 6:22 pm Post subject:

It could very well be board related too.

Curt?

roaddog · Joined: 09 May 2006 Posts: 32

I decided to do a scratch setup and see if that fixes the problem. I grabbed Graham's setup DVD and started the setup. He says you should just use the raster , no test patterns to set up the size. I did not do that the first time I just used the test pattern.

I decided to do it with just the raster this time and I cannot get just the raster with out a test pattern. He says turning the brightness up all the way will accomplish this, but mine will not do it. Anyone have an idea how to do it?

**Curt Palme** · Posted: Sun Jan 04, 2009 4:56 pm Post subject:

Nah, on that set just use the test patterns, you're fine.

roaddog · Joined: 09 May 2006 Posts: 32

Thanks for the advice. I'll post how it turns out.

roaddog · Joined: 09 May 2006 Posts: 32

New problems. I now have a extra bit of line hanging over the right side of the test pattern horizontal lines on the red and blue tubes. Looks like there maybe a little bit on the green as well. If I put up the cross hair it's not there right away it takes a second or 2 then it grows out the right side of all the horizontal lines.

It is directly related to the bias . If I turn down the red and blue the line shrinks in size and I can get it to stop at the right edge, however doing so really makes the whites terrible. IT was suggested to me maybe the G2 needs adjusting, so I asked in a separate thread how to adjust it.

What should the bias be set to?

It makes the picture unwatchable it's like you get a red smudge over the image. I did notice that if I put up a test pattern with an input on the screen the extra lines will shrink and lenghten as the image changes scenes.

The other problem is now I have a vertical band on all tubes on the right side. The image is there then a space then a band with no image just raster. Doesn't go away if I change the size or centre of the image. Again any help or guidance is really appreciated.