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stridsvognen
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| Posted: Mon Apr 23, 2012 6:50 pm Post subject: Vidikron Vision One (Project) |
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Hi, all you CRT lovers.
I'm new here, and CRT is only a 3 week old technology I'm my world.
I got the opportunity to buy a 1997 Vidikron Vision One, with 1500 hours, as new. I went to see the beast, spend 4 hours looking and testing it, with the seller who didn't know anything about it.
I could see some fungus, and the belows were sweating a little, guess i expected that after reading in here for 1 week before going to buy it.
Now its installed on some tables in the middle of my HT and I'm spending all my time studying testing and adjusting it.
I'm already quite impressed, running with a HD Fury 3. DVDO VP50. OPPO 83. 1080P 72Hz
Moome card, belows, and a red C element, is coming soon.
But i need help from all you hardcore CRT guys, making this thing beat up my JVC X7, because i'm already quite sure it will.
My main issues today is banding. Vertical in the left side like a curtain, and a horizontal line true the center. Have been playing with geometry for some time now, without much luck. What to do?
Calibration is quite ok, except the blue gamma, and playing with the electrical focus, just messed up my perfect 0-40 IRE
Is the solution labeled LUMAGEN, or is there any easy fix.?
In time ill like to know if there is any mods who will improve my PQ, like less noise, and more headroom to the signal path.
All inputs are more than welcome, ill answer all questions as good as possible ASAP.
A few pics of my new toy.
Last edited by stridsvognen on Tue Apr 24, 2012 12:11 pm; edited 3 times in total
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HaydnG90
Joined: 22 May 2006
Posts: 1356
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| Posted: Mon Apr 23, 2012 7:18 pm Post subject: |
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Can the VP50 really do 72Hz at 1080P?
Congrats on the new pj. Love the white case. Thing looks like its been mothballed its entire life.
FOr some reason I can't see the 1st pic.
Last edited by HaydnG90 on Mon Apr 23, 2012 7:21 pm; edited 2 times in total
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Tim in Phoenix
Joined: 21 Oct 2006
Posts: 4409
Location: Phoenix
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| Posted: Mon Apr 23, 2012 7:20 pm Post subject: Re: Vidikron Vision One (Project) |
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| stridsvognen wrote: |
My main issues today is banding. Vertical in the left side like a curtain....... |
You will need a new horizontal deflection module, yours is not repairable.
Cheers
.
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stridsvognen
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| Posted: Mon Apr 23, 2012 7:25 pm Post subject: |
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| HaydnG90 wrote: | Can the VP50 really do 72Hz at 1080P?
Congrats on the new pj. Love the white case. Thing looks like its been mothballed its entire life. |
thanks..
I will take the white case off, when i'm going to hang it... Everything else in my room is black or gray.. So white is no go here.
Ill build a box for it.
https://www.curtpalme.com/forum_archived/viewtopic.php@t=11205.html
Here you find the data to make the VP 50 able to run 72hz.. Great forum. 
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stridsvognen
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| Posted: Mon Apr 23, 2012 7:27 pm Post subject: Re: Vidikron Vision One (Project) |
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| Tim in Phoenix wrote: | | stridsvognen wrote: |
My main issues today is banding. Vertical in the left side like a curtain....... |
You will need a new horizontal deflection module, yours is not repairable.
Cheers
. |
Oh oh.. where to get that one..?
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Nashou66
Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY
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stridsvognen
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| Posted: Mon Apr 23, 2012 7:37 pm Post subject: Re: Vidikron Vision One (Project) |
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And how do i adjust porches..? Don't even know what it means.. Seen the word many times, just didn't find out what it is.
( Still a bit slow at technical words in english ) Be gentle with me.. 
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jbmeyer13
Joined: 03 Dec 2010
Posts: 1135
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| Posted: Mon Apr 23, 2012 9:00 pm Post subject: |
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Nashou66 is referring to output timings; i.e. "porch settings" which can be adjusted on your VP50. Basically if you adjust the timings correctly you expand the overall size of raster while keeping the viewable image the same size. When the overall raster is expanded the "jail bar ringing" is shifted outside the viewable image. Electrohome did produce an HDM specifically for Boeing which does not display the ringing but they are rare and expensive, therefore it makes sense to learn how to adjust the timings on your VP50.
I'm not familiar with the VP50, therefore I suggest you do a forum search on "VP50 porch settings" or "VP50 timing". Also check the video processor forum.
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Phoenixed
Joined: 13 Oct 2011
Posts: 514
Location: The mitten
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| Posted: Mon Apr 23, 2012 9:06 pm Post subject: |
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Porch settings are quite easy to adjust on the vp50. The lumagen is just a little slicker on its execution of them.
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stridsvognen
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| Posted: Mon Apr 23, 2012 9:42 pm Post subject: |
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Thanks.. Think i got it.. Just a bit tricky while running 72Hz.. so had to lower the resolution a bit.. 1900x1050 underscan is 77 and 1% overscan to make everything run smooth..
Gues i better start saving up for that Lumagen..
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HaydnG90
Joined: 22 May 2006
Posts: 1356
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| Posted: Mon Apr 23, 2012 9:57 pm Post subject: |
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I guess there is a reason why the Lumagen is the de facto processor for 1080P/72Hz
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jbmeyer13
Joined: 03 Dec 2010
Posts: 1135
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| Posted: Mon Apr 23, 2012 10:11 pm Post subject: |
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| stridsvognen wrote: | Thanks.. Think i got it.. Just a bit tricky while running 72Hz.. so had to lower the resolution a bit.. 1900x1050 underscan is 77 and 1% overscan to make everything run smooth..
Gues i better start saving up for that Lumagen.. |
Do you plan to watch a lot of film based material with a 1.78/1.85 aspect ratio? Unless you are planning to do just that, 1080P/72 isn't going to help much.
Most films are shot in 2.35/2.40 aspect ratio and on Blu-Ray they only have 800 lines of active resolution; the other 280 lines are for the black "letterbox bars" and are wasted bandwith.
For 2.35/2.40 aspect ratio material (just about every film these days) you could run 1920 x 800P/72 with a Lumagen HDQ and obtain the same picture quality as 1920 x 1080P/72. The Lumagen has a squeeze function that allows you accomplish this by only scaling the 800 lines of the active image.
The VP50 may offer the same feature and if it does you wouldn't really need to upgrade.
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stridsvognen
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| Posted: Mon Apr 23, 2012 10:15 pm Post subject: |
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| HaydnG90 wrote: | | I guess there is a reason why the Lumagen is the de facto processor for 1080P/72Hz |
Guess so... It would be nice with some headroom to work with..And ill not go back to 60 Hz..
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stridsvognen
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| Posted: Mon Apr 23, 2012 10:43 pm Post subject: |
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| jbmeyer13 wrote: | | stridsvognen wrote: | Thanks.. Think i got it.. Just a bit tricky while running 72Hz.. so had to lower the resolution a bit.. 1900x1050 underscan is 77 and 1% overscan to make everything run smooth..
Gues i better start saving up for that Lumagen.. |
Do you plan to watch a lot of film based material with a 1.78/1.85 aspect ratio? Unless you are planning to do just that, 1080P/72 isn't going to help much.
Most films are shot in 2.35/2.40 aspect ratio and on Blu-Ray they only have 800 lines of active resolution; the other 280 lines are for the black "letterbox bars" and are wasted bandwith.
For 2.35/2.40 aspect ratio material (just about every film these days) you could run 1920 x 800P/72 with a Lumagen HDQ and obtain the same picture quality as 1920 x 1080P/72. The Lumagen has a squeeze function that allows you accomplish this by only scaling the 800 lines of the active image.
The VP50 may offer the same feature and if it does you wouldn't really need to upgrade. |
I have some BD movies in 1.78 like AVATAR, so the solution will be something like lumagen radiance XS. And maybe with SDI.
but there is plenty of things to work with here.. And scalers are almost worthless the next day around here.. So i really really want to be sure i need it.
I also have around 500 LD movies, so i also wonder how the lumagen handels that, and 480i NTSC is a hopeless format.
PAL movies are much better/ easy to work with.
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stridsvognen
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| Posted: Tue Apr 24, 2012 11:58 am Post subject: |
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Here is some of the tech bulletins i did already.
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Nashou66
Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY
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stridsvognen
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stridsvognen
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| Posted: Tue Apr 24, 2012 1:43 pm Post subject: |
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I'm looking forward to get the comment from my assistant.. He is looking Cars 2 at the moment.
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stridsvognen
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| Posted: Tue Apr 24, 2012 6:28 pm Post subject: |
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I just finished playing around with the porch settings on my VP50, and there is no way that thing will do 1920x 1080 72hz without ringing.
Its now 1920x 1040 72hz, and almost any setting i touch will make thee picture break up,, so i'm on the edge.
1week ago, before i got the HD fury 3 i was using both my vp50 and vp50 pro.
feeding vp50 with 1080i component from my oppo83 then from vp50 to vp50pro with hdmi and from the vp50 pro to the vidikron via RGB HV. Don't remember exateley wich one did what, but some how i had 2 fl more light on my screen when calibrated..
Ill try this trick with HDMi all the way to the HD fury, and se what will happen.
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Nashou66
Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY
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| Posted: Tue Apr 24, 2012 7:08 pm Post subject: |
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The VP 50 can not handle that bandwidth. The Marquee will be able to. I did it with my TV-ones when I first got them before I set up the blend and I had my 9500LC in the theater for testing. it had to have huge porches where the raster was folding over the tube edge face.
But the image i kept in the viewable area with only about 2 mm on the left side of the tube face and i had to move the right side in a bit
to avoid the ringing. its hard to do but possible.
Athanasios
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