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Nashou66
Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY
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mp20748
Joined: 12 Sep 2006
Posts: 5689
Location: Maryland
TV/Projector: 9500LC Ultra / Super 02 and 03 VIM
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mp20748
Joined: 12 Sep 2006
Posts: 5689
Location: Maryland
TV/Projector: 9500LC Ultra / Super 02 and 03 VIM
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| Posted: Sat Nov 09, 2013 12:45 am Post subject: |
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Ok, I had asked a question earlier, asking if anyone knew how I was able to make the circuit work without one of the two switches needed for the video.
No one responded... come on guys, I'm not that good. 
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Nashou66
Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY
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Nashou66
Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY
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mp20748
Joined: 12 Sep 2006
Posts: 5689
Location: Maryland
TV/Projector: 9500LC Ultra / Super 02 and 03 VIM
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| Posted: Sat Nov 09, 2013 1:16 am Post subject: |
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You meant the SD5401 right,
It has four switches. Two for video switching between Internal and External. Two (one each) for the DC restoration stages that support both Internal and External stages.
One of the 4 switches I'm not using??
| Nashou66 wrote: | you used the extra channel in the SD5404?
Nashou |
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Nashou66
Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY
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mp20748
Joined: 12 Sep 2006
Posts: 5689
Location: Maryland
TV/Projector: 9500LC Ultra / Super 02 and 03 VIM
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| Posted: Sat Nov 09, 2013 1:06 pm Post subject: |
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| Nashou66 wrote: | Yeah the 5401. umm ok so one switch is not used but are reassigning that switch for something else?
Nashou |
Ok, what I'm doing is using the "enable" feature (pin 8) on the first op-amps on the VIM to replace the switching of the one switch I'm not using in the SD5401.
So with pin 8 of the op amp, I can turn them on and off. There's a little more to it of course, but that's basically how I'm making this happen.
Also, and I've shared this in PM and email. Until I get my test unit back up and running, I'm not going to be doing anything with these mods. Only those I've already started working with weeks, and that's just a few. So until I can get back to my test unit my hands are tied and I can't offer them or take an order or even know how I'll move forward.
I do know that these higher bandwidth neck boards are way more stable than any I've even done before. And they are more stable than stock boards. I usually run them with the cover to the CRT's removed. I do that to expose them as much heat as possible, by not allowing the belly fans to reach them. And besides them being 100% stable from high heat failure, they have also tested to be 100% stable with color shifting. In fact I left my own marquee on over night running full 1080P. this test was done with no cooling at to the neck boards. Also note that one of the reasons the stock neck boards suffer color shifting is because of the shielding they put on the back of the neck boards. I do not replace that shield, and here's why; the heat blown in that area hits the neck board heat-sink for cooling, but it also reaches the components on the neck boards PC board. By having air flow this way, if the room (enviroment0 temperature changes, so will the air temperature blown into the neck board area. And of course, that change in temperature will cause color shifting when the temperature changes on the component section of the neck boards. By removing the back cover, the cooling only hits the heat sink, which is the major concern. the component part of the board remains in an ambient environment further away from changing temperatures. And that is the same principle used on the rear heat-sink. It is not subject to air blowing from fans. And if it did, you know the disaster that would cause.
Anyway, I also found out that the higher bandwidth neck board would definitely need good cables (stock) and would do better with better cables, or cables that has a heavier grounding wiring.
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Nashou66
Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY
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| Posted: Sat Nov 09, 2013 2:13 pm Post subject: |
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Ok so this is on the 03P vim. So the RGB OpAmp you use has an enable. You tun it off to stop external video then the SD5401 still is sending the internal to the second OpAmp in the video chain. So this really would only work on the 03P vims.
Very creative I must say.
Now since there is no second OpAmp on the 02P vims would you be able to do the same but now it feeds the ............ WAIT it would work on the 02P vim as well since the second OpAmp is integrated into the contrast multiplier AD835!!!!
Nice!!!
Nashou
_________________
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
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mp20748
Joined: 12 Sep 2006
Posts: 5689
Location: Maryland
TV/Projector: 9500LC Ultra / Super 02 and 03 VIM
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| Posted: Sat Nov 09, 2013 2:21 pm Post subject: |
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I did it on an 02 VIM. It will work on both.
still the best option is the mini board or a different solution to get around the video section of the SD5401.
| Nashou66 wrote: | Ok so this is on the 03P vim. So the RGB OpAmp you use has an enable. You tun it off to stop external video then the SD5401 still is sending the internal to the second OpAmp in the video chain. So this really would only work on the 03P vims.
Very creative I must say.
Now since there is no second OpAmp on the 02P vims would you be able to do the same but now it feeds the ............ WAIT it would work on the 02P vim as well since the second OpAmp is integrated into the contrast multiplier AD835!!!!
Nice!!!
Nashou |
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mp20748
Joined: 12 Sep 2006
Posts: 5689
Location: Maryland
TV/Projector: 9500LC Ultra / Super 02 and 03 VIM
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| Posted: Sat Nov 09, 2013 3:29 pm Post subject: |
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I think I have the problem with my test unit solved. I think all I need now is a HVPS, and that should get me back up and running. I know I should have another working one around, or fix one of the many i have here. I'll get into that later this week.
I'll also be bringing back the Mini Board Mod. And for anyone with the latest high bandwidth mods of the past few or more months, if you're able to solder, you should be able to attach it as a DIY.
The 250mhz version of the mods will be for my commercial customers only (and me), they would really be able to benefit from that bandwidth. Most of their setups are running @ 96hz and 104hz refresh.
So we'll only be doing one board set that will be 200mhz capable. I'm thinking of also providing the neck board cables as well, because it they work best with shorter cables that have heavier ground shield wiring. I'll post a picture later showing how I use the shorter cables and where I run them on the projector.
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jbmeyer13
Joined: 03 Dec 2010
Posts: 1135
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| Posted: Mon Nov 11, 2013 4:14 am Post subject: |
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Hey mike- looking fwd to details on vim/vnb cable length. I have one side of my new high bw cables terminated but am waiting on this info prior to completing them.
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Projector: Modded 9501LC ULtra- MP VIM, Vold VNB, ETECH LVPS, Silver VIM Cables, HD10F's & a V1 case!
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mp20748
Joined: 12 Sep 2006
Posts: 5689
Location: Maryland
TV/Projector: 9500LC Ultra / Super 02 and 03 VIM
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| Posted: Mon Nov 11, 2013 5:52 pm Post subject: |
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| jbmeyer13 wrote: | | Hey mike- looking fwd to details on vim/vnb cable length. I have one side of my new high bw cables terminated but am waiting on this info prior to completing them. |
I just finished making a set for my Marquee. Pictured I'm using Commscope 73501S on my mini RCA cables. I've had this cable since somewhere around 2001. It is 26ga high bandwidth mini cables.
I had to replace what I was using, that was a cheap mini cable until I found my better cables.
My cable length is 24" and It's routed directly from each neck board to the VIM without going to that hole on the side of the chassis.
Here ya go:
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stridsvognen
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| Posted: Tue Nov 12, 2013 9:45 am Post subject: |
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Mike.. Do you know anyone that have the new Radiance 2041 or 2042, so your boards can be tested with 1080P 96hz, thats a pixel clock around 254Mhz
Im curious if a jump up from 72 ro 96hz will do much difference on a high bandwidth CRT. And im sure that would make the fast phosfor tubes like the PT22 more usefull in the marquee to.
If it will work, i would consider to save up for a radiance capable of outputting 1080P 96hz. We also need to know if the moome card will be able to go that high.
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HK-Steve
Joined: 15 Jul 2006
Posts: 849
Location: Switzerland
TV/Projector: Marquee 9500, Epson 8100
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| Posted: Tue Nov 12, 2013 11:40 am Post subject: |
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The shortest path is the middle of the chassis,
Pic show my route, also with the extension kit installed.
Cheers
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HK-Steve
Joined: 15 Jul 2006
Posts: 849
Location: Switzerland
TV/Projector: Marquee 9500, Epson 8100
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| Posted: Tue Nov 12, 2013 11:44 am Post subject: |
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A bare chassis pic
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Nashou66
Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY
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| Posted: Tue Nov 12, 2013 1:22 pm Post subject: |
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| stridsvognen wrote: | Mike.. Do you know anyone that have the new Radiance 2041 or 2042, so your boards can be tested with 1080P 96hz, thats a pixel clock around 254Mhz
Im curious if a jump up from 72 ro 96hz will do much difference on a high bandwidth CRT. And im sure that would make the fast phosfor tubes like the PT22 more usefull in the marquee to.
If it will work, i would consider to save up for a radiance capable of outputting 1080P 96hz. We also need to know if the moome card will be able to go that high. |
My TV-ones will go that high and I can go RGBHV out to them so the moome card wont matter.
Mike said he would send me a vim but I do not have the higher bandwidth vnb's. but i could test if I have just one of the vnbs just for one tube.
Nashou
_________________
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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stridsvognen
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| Posted: Tue Nov 12, 2013 1:31 pm Post subject: |
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| Nashou66 wrote: | | stridsvognen wrote: | Mike.. Do you know anyone that have the new Radiance 2041 or 2042, so your boards can be tested with 1080P 96hz, thats a pixel clock around 254Mhz
Im curious if a jump up from 72 ro 96hz will do much difference on a high bandwidth CRT. And im sure that would make the fast phosfor tubes like the PT22 more usefull in the marquee to.
If it will work, i would consider to save up for a radiance capable of outputting 1080P 96hz. We also need to know if the moome card will be able to go that high. |
My TV-ones will go that high and I can go RGBHV out to them so the moome card wont matter.
Mike said he would send me a vim but I do not have the higher bandwidth vnb's. but i could test if I have just one of the vnbs just for one tube.
Nashou |
Interesting, you just need to find out if the TV ones dont role off the high bandwidth, just like the HDQ, and many other DA converters.
May i surgest to start confirming that you can resolve the vertical lines on 1080P 72hz using the radiance, and moome, and then do the same with your TV ones and see if it look the same.
And you need a MP VNB for sure to make that happening.
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mp20748
Joined: 12 Sep 2006
Posts: 5689
Location: Maryland
TV/Projector: 9500LC Ultra / Super 02 and 03 VIM
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| Posted: Tue Nov 12, 2013 1:38 pm Post subject: |
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| Nashou66 wrote: |
Mike said he would send me a vim but I do not have the higher bandwidth vnb's. but i could test if I have just one of the vnbs just for one tube.
Nashou |
I'm still going to do that, but have to wait on a few boards to come in first.
When that happens, I'll modify and send you a full set (N/B - 02VIM) - it will be 250mhz capable, but it would help if you verify with the maker of your processor that it indeed is capable of doing 250mhz bandwidth on its BNC's.
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Nashou66
Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY
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| Posted: Tue Nov 12, 2013 2:14 pm Post subject: |
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I am pretty sure it is. The test guys at TV-one tested up to 1080p@85 hz and it did that with a breeze but because the display was only capable of that resolution maximum they could not be 100% sure how high it can go. But Robert Drake the lead engineer feels it can go higher. I have run 800p@120 from the RGBV;s and it looked good there but that was with the stock VIM. Adjusting Scott's peaking circuit made it much clearer .
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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