CurtPalme.com Home Theater Forum

Nashou66 · Last edited by Nashou66 on Tue Jan 10, 2012 12:17 am; edited 2 times in total

Hi Guys, and asking the Marquee techs here. have you ever seen what is in the Pics below before?
I originally thought it was the Issue of the TV-one blenders but Now I think its inherent in the longbows.

I took the Tv-One out of the system and put into the second Moome HDMI slot my Lumagen HDQ
and the set up I had with my old M8500 1080p@48. So i put up a full field white and lower contrast so i don't burn my eyes out and so the lines can be photographed easier.

Also I noticed the internal menu's streak while looking but it was only the menus so no big deal,
as I think All marquees do this , and its only noticeable looking into the tube at low contrast.

So I thought it might be the new moome card and I put the old back in but it was the same.
I did not change out to a new Vim yet, i am to tired to do it now but will tomorrow afternoon.

EDIT: You can also see it here where i was sending this info to the Tv-One guys that the red and blue colr fields do not blend correctly in YUV mode. But thats another story: here is the bars on either side of the purple bar.

So what is it? And what can cause it? Could it be the peaking circuit on the vim?( tried non peaking circuit Vim not it)
I have never noticed this on any other Marquee I have.

More testing will happen tomorrow.

But if Scott is lurking the forums tonight chime in please Smile

Athanasios

antorsae · Joined: 16 Jul 2006 Posts: 297

Nash - Do a full geometry reset and see if it's still there. It may be vertical banding.

Nashou66 · Posted: Sat Dec 05, 2009 1:54 pm Post subject:

CIR Engineering · Posted: Sat Dec 05, 2009 4:50 pm Post subject:

Have you set the blanking? Make sure your blanking is right up to the boarder of the image. I have seen similar distortion to this when the blanking is not in use.

Can you see the distortion on screen or only looking into the tubes?

craigr

Nashou66 · Posted: Sat Dec 05, 2009 6:15 pm Post subject:

draganm · Joined: 08 Mar 2006 Posts: 5080 Location: Colorado

there's a TCB for jail-bar's and menu streaking, I would think your 8503 VIM would have it though?

Nashou66 · Posted: Sat Dec 05, 2009 7:38 pm Post subject:

antorsae · Joined: 16 Jul 2006 Posts: 297

antorsae · Joined: 16 Jul 2006 Posts: 297

Nash - on the TV-One pic the bars are symmetric... that's too strange. Can you feed just one projector with a different source?

Nashou66 · Posted: Sat Dec 05, 2009 8:04 pm Post subject:

Nashou66 · Posted: Sat Dec 05, 2009 10:21 pm Post subject:

Ok I tried a new Recall and cleared it out and left it as is , no convergence or anything else touched.
The lines were still there.

So i went to my other Long bow and pulled the vim since i only have the Moome card and not any RGBHV's as the other PJ does, easier to dismantle . I put in another 02P vim with no peaking circuit and its still there.

Also Scott if you read this remember i told you about those horizontal bands of vertical distortion lines and I could not capture it? well this other vim shows it better, But i made it less noticeable by pushing on the slot 2 side of the vim connector against the back plane. It was reduced but still there. Pics of vertical bars with different Vim and
the horizontal bands of vertical distortion

Bars and distortion if you look closely

Close up of distortions, these have always been here since I got the longbows.

Scott do you think it could be the Longbow mods? And could I try a non Ultra HDM here to see if its that?

So now I have two issue with the PJ's and one with the Tv_ones. Sad

Athanasios

Tim in Phoenix · Joined: 21 Oct 2006 Posts: 2252 Location: Phoenix

Hello

Try unplugging the stig and convergence yokes. Try running green without the vIM coax. Try scoping output of VIM coax, use horizontal rate on the scope. Try also another HDM, earlier HDMs are OK to try. Try another control board, OK to try earlier versions.

.

tse · Joined: 03 May 2006 Posts: 1005 Location: Sweatbucket, Fl.

The video input is with the options slot? Try removing the option card and connect some video to the main RGB inputs to see if it is still there. Try removing all input video and look at the internal test patterns at internal test frequencies close to your external ones.

Scott

Nashou66 · Posted: Sun Dec 06, 2009 3:55 am Post subject:

Thanks Tim And Scott,

First the vertical bars, they are there with no video input connected and with internal video, and new CLM. As you lower contrast they become
much more visible and go across the entire tube face on all colors.

Also the vertical lines in the horizontal bands are still there as well.

So i decided to remove the Astig and CVA cables, the Vertical bars are still there but the Vertical lines in the horizontal bars are gone.
so the SAB is casing the vertical lines in the horizontal bands.

But the bigger more noticeable problem remains.

I still need to swap out the HDM, will do that now, i need to find my 08 HDM with the Wimas I think its an Ultra board.

Edit: 11:16pm:

Ok Swapped out the HDM and the Bars are still there on all tubes, both PJ's. ?????

I also disconnected one channel of the focus board, red still there. So it could be the VNB's or the CCM, the CCm is next.
be back soon...

Edit: 11:31pm

Pulled the CCM and no change. Bars still there.

So now what do I do for the horizontal bands with the vertical lines in them, any part Scott that might be the culprit?

Athanasios

Nashou66 · Posted: Sun Dec 06, 2009 9:46 pm Post subject:

macgyver655 · Joined: 22 Aug 2007 Posts: 6970

Nashou66 · Posted: Sun Dec 06, 2009 10:29 pm Post subject:

I was thinking that too Ron, bad phosphor but on both Longbows? The I thought bad power so i ran it from a different plug. same thing.

To I could try the G2 raised but its hard to see it if the tube is too bright, its best seen at lower contrast levels but noticeable on the Screen at
normal viewing levels. I was almost tempted to use my extended VNB cables and put the new VDC red LUG i have with all the magnetics on it. But too lazy at the moment.
Plus id have to make a tall table to get the spare tube right up to the PJ since its on the ceiling now. I think a VNB swap should be next.

But i'll try the G2 not sure how to pull the coax off the VNB. I'll raise the G2 on one of the colors save the new setting and then pull the coax and start it up again.
Any harm doing it that way or wont it work?

Also what would cause those vertical squiggles in the horizontal bands in the zoomed pic above from the astig board? that is not fed into the video signal but just controls the electron beam in the focus coil. Looks like digital noise from the control might be getting into the video somehow through the power rails?
Still Waiting for Scott to explain that one.

I'll wait for the G2 answer., I could pull the coax from the VNB but if you know how its connected there it doesnt just pull off and I am not going to try to hold the VNB steady with a HV DC G2 line and even the 85 DC rail too Ouch!!!

Athanasios

MikeEby · Joined: 24 Jun 2007 Posts: 5150 Location: Osceola, Indiana

When you shift horiz do the bars move? Maybe you posted that already, I didn't see it....If they do, I would think its not the phosphor or the tube.

Mike

Nashou66 · Posted: Sun Dec 06, 2009 11:00 pm Post subject:

macgyver655 · Joined: 22 Aug 2007 Posts: 6970