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PJMoore
Joined: 05 Oct 2006
Posts: 99
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| Posted: Thu Apr 24, 2008 5:41 pm Post subject: Marquee 8500 adjustment |
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I have done the setup on mine several times ( good practice I suppose ) using Bill's magnetics 101 and others as my guidebooks. My question is this -
When I go to converge blue, it seems like the UP/DOWN adjustment makes the blue move at about 30 degrees from the vertical. The red adjusts straight up and down, however.
Second issue - the red stays rock solid on convergence, but blue seems to want to be adjusted, and always about the same amount and in the same area - primarily the upper left hand corner. When I make the adjustment, it tends not to respond initially, and then suddenly "jumps" after which it responds normally. Is this the "snap" issue I read about in the TBs, and if so, why does it only seem to do it to the blue adjustment (red doesn't do it)?
Many thanks to all you gurus out there.
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draganm
Joined: 08 Mar 2006
Posts: 8990
Location: Colorado
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| Posted: Thu Apr 24, 2008 6:10 pm Post subject: |
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it might be stig snap but could also be a pinched coil or bad channel on Convergence amp. When you adjust Blue, do yuo see any brightness flicker on Blue grid?
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PJMoore
Joined: 05 Oct 2006
Posts: 99
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| Posted: Thu Apr 24, 2008 6:12 pm Post subject: |
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No - no flicker.
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Chuchuf
Joined: 11 Mar 2006
Posts: 548
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| Posted: Thu Apr 24, 2008 7:56 pm Post subject: |
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Your convergence yoke isn't "centered" if you aren't moving up/dn and left right on the vertical and horizontal axis. It needs to be rotated on the tube relative to the DY yoke.
Terry
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Nashou66
Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY
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PJMoore
Joined: 05 Oct 2006
Posts: 99
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| Posted: Thu Apr 24, 2008 8:18 pm Post subject: |
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Thanks guys - That makes sense. The yoke needs to know where "up" is, and that explains why red is not affected and blue is. I will pay close attention to that part of my next setup.
Any more thoughts on why blue alone seems to need reconverging every few days in the upper left corner? One additional bit of data - if I stay on SD broadcasts blue stays where it is supposed to. If I change to a HD broadcast, it usually needs shifting. I then adjust convergence on blue and SAVE. If I stay on HD, blue stays put. Change back to SD, and blue needs adjusting again. It is almost like everything EXCEPT blue convergence is remembered, but blue is not. Of course this is not always true (naturally) sometimes blue is OK.
Now for my setup. I use the new Comcast Motorola 6416 DVR box at 1080i out in HD, and 480i out in SD. The component out runs to a Lumagen HDP Pro. The HDP output is 1080i RGBHV to the Marquee. The battery in the Marquee is relatively fresh (new one installed 12 months ago), and I see no evidence of any other settings that are not remembered between HD and SD.
...and for the GRAND PRIZE, ladies and gentlemen - name that glitch!
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Nashou66
Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY
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| Posted: Thu Apr 24, 2008 9:04 pm Post subject: |
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Ok, the first reason are the deflection yoke and scan yoke, if they are both bot centered/level on the horizon it will affect the convergance for the blue since it is compensating to keep it converged while the convergence yoke is not level to the horizon.
Next, do you have separate memories set up in the Marquee for those two different outputs?, that would be the best way to have it. set up an independent output in you lumagen for each resolution then set up two different channels or recalls on the marquee. copy your 1080i to another channel or recall on the marquee to make it easier for setting up 480i , i actualy have 960p set up for sd material from my dish and 1080i for the high deff stuff.
Athanasios
_________________
Don't blame your underwear for your crooked ass~ unknown Greek philosopher
"Republicans believe every day is the Fourth of July, but the Democrats believe every day is April 15." --- President Reagan
One Smart Dog!!!
Marquee High Performance Bellows now shipping!!
Marquee Modifications and Performance Enhancement
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JustGreg
Joined: 07 Mar 2006
Posts: 3098
Location: Kenosha, WI
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| Posted: Fri Apr 25, 2008 1:58 am Post subject: |
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Man...I must have done one HELLUVA setup job on mine because I don't have to do anything but an occassional convergence touch up every 6 months or so. One thing I can't stand however is how blue overlaps R&G on both sides of the lines. I understand that's 'normal' to a certain extent but it definately must be softening the image. If I weren't so damn lazy I'd track down the problem and crush it but....it's just TOO easy to sit and play games.
Yeah I remember sticking my big mitts into a live machine to get the yokes and coils aligned <shiver> I'm not in any hurry to do that again any time soon....but it was well worth the rush.
_________________
Greg
"Is it ignorance or apathy? Hey, I don't know and I don't care!" --Jimmy Buffett
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Nashou66
Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY
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| Posted: Fri Apr 25, 2008 2:08 am Post subject: |
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| JustGreg wrote: | Man...I must have done one HELLUVA setup job on mine because I don't have to do anything but an occassional convergence touch up every 6 months or so. One thing I can't stand however is how blue overlaps R&G on both sides of the lines. I understand that's 'normal' to a certain extent but it definately must be softening the image. If I weren't so damn lazy I'd track down the problem and crush it but....it's just TOO easy to sit and play games.
Yeah I remember sticking my big mitts into a live machine to get the yokes and coils aligned <shiver> I'm not in any hurry to do that again any time soon....but it was well worth the rush. |
Actually greg if you tighten up the focus on the blue tube you will alter the grey scale a bit and have less light output. Most CRT's need the blue defocused to properly set grey scale, this scatters more of the electron beam on the blue phosphor which produces more light output its a little trich claibratoers use to properly set grey scale. Also we do not really see blue that well so the slight misconvergence and over lap you talk about really cant be seen unless you really look for it. I'm sure Kal will explain this in the calibration piece he is working on.
Athanasios
_________________
Don't blame your underwear for your crooked ass~ unknown Greek philosopher
"Republicans believe every day is the Fourth of July, but the Democrats believe every day is April 15." --- President Reagan
One Smart Dog!!!
Marquee High Performance Bellows now shipping!!
Marquee Modifications and Performance Enhancement
Marquee C-element and Bellow removal
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PJMoore
Joined: 05 Oct 2006
Posts: 99
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| Posted: Fri Apr 25, 2008 2:28 pm Post subject: |
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| Nashou66 wrote: | | Next, do you have separate memories set up in the Marquee for those two different outputs?, that would be the best way to have it. set up an independent output in you lumagen for each resolution then set up two different channels or recalls on the marquee. Athanasios |
Yes - I am set up with independent memories in the HDP for each input device. I should point out that the "CABLE" memory I use actually has 4 separate sub channels that automatically switch based on the incoming signal. So when I switch from DVD (480i component) to CABLE (480i or 1080i component), the Pronto sends a command to shift HDP input memories from DVD to CABLE, and then the HDP automatically shifts between the CABLE submemories depending on the sensed resolution. I like it this way since the resolution between various cable channels here varies and I do not want to have to reset HDP memories every time I change cable channels. In all cases the I use a single output memory set to 1080i RGBHV.
I have some doubt that an HDP configuration would affect blue alone. Although I learned long ago that in this field anything is possible, I would think that it is something in the Marquee that is causing blue alone to behave this way. Any more thoughts on this problem?
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Nashou66
Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY
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PJMoore
Joined: 05 Oct 2006
Posts: 99
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| Posted: Fri Apr 25, 2008 2:43 pm Post subject: |
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Well alrighty then! I have my instructions downloaded, I put on all my rings and bracelets, washed my hands in saltwater, and I am standing in a bucket of water. I guess it's time to reach in there and grab stuff.........
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Nashou66
Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY
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JustGreg
Joined: 07 Mar 2006
Posts: 3098
Location: Kenosha, WI
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| Posted: Fri Apr 25, 2008 5:45 pm Post subject: |
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| Nashou66 wrote: | | JustGreg wrote: | Man...I must have done one HELLUVA setup job on mine because I don't have to do anything but an occassional convergence touch up every 6 months or so. One thing I can't stand however is how blue overlaps R&G on both sides of the lines. I understand that's 'normal' to a certain extent but it definately must be softening the image. If I weren't so damn lazy I'd track down the problem and crush it but....it's just TOO easy to sit and play games.
Yeah I remember sticking my big mitts into a live machine to get the yokes and coils aligned <shiver> I'm not in any hurry to do that again any time soon....but it was well worth the rush. |
Actually greg if you tighten up the focus on the blue tube you will alter the grey scale a bit and have less light output. Most CRT's need the blue defocused to properly set grey scale, this scatters more of the electron beam on the blue phosphor which produces more light output its a little trich claibratoers use to properly set grey scale. Also we do not really see blue that well so the slight misconvergence and over lap you talk about really cant be seen unless you really look for it. I'm sure Kal will explain this in the calibration piece he is working on.
Athanasios |
Yup. I totally understand that and agree. I think the flapping is out of whack. The red "DO NOT TOUCH" factory caps are missing so somebody has been in there. I did my best when I set it up to get it back to factory specs but I'm guessing the blue is still off a bit. Moot point anyway as I have to tear it down and install Barry's adapters and the 145's. (I know Barry...I'm so frigging embarassed I haven't done this yet...but in my defense, I put the pj up with crappy methodology and just recently gathered everything to do it correctly and safely.)
My apologies for the mini hijack OP. 
_________________
Greg
"Is it ignorance or apathy? Hey, I don't know and I don't care!" --Jimmy Buffett
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