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Tinman
Joined: 09 Mar 2006
Posts: 1326
Location: Carson City Nevada
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| Posted: Tue Sep 03, 2013 3:28 am Post subject: |
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Swapping the neck boards won't tell you anything. I'm trying to find out if the signal TO the gain board is ok. Would all be very easy with a scope. Something I could pin down in 10 minutes, but this way.... it's not so easy.
You DID mention that the MENU screen DOES show, right?
I'll say nothing on the G2.
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the big E
Joined: 20 Apr 2013
Posts: 1928
Location: speedwell Tn.
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| Posted: Tue Sep 03, 2013 3:37 am Post subject: |
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| Tinman wrote: | Swapping the neck boards won't tell you anything. I'm trying to find out if the signal TO the gain board is ok. Would all be very easy with a scope. Something I could pin down in 10 minutes, but this way.... it's not so easy.
You DID mention that the MENU screen DOES show, right?
I'll say nothing on the G2. |
Menus show on all three tubes just fine
The grids are fine on the blue and red tubes but only show a negitive version on the green tube(same with input signal)if the g2 is turned up till the raster shows
Also when I first power up the set the green and red tubes act like the brightness has been turned up to max for a few seconds then go normal yet the video in shows the same systptoms except the brightness level never drops and the picture shakes
I have checked all the connections(both in and out) and they are seated right and non look broke or damaged(even if they suck)
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CasetheCorvetteman
Joined: 09 Nov 2008
Posts: 6326
Location: Australia
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| Posted: Tue Sep 03, 2013 4:03 am Post subject: |
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How do you plan to recalibrate the G2 now that youve moved it? You change it via on screen menus.
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the big E
Joined: 20 Apr 2013
Posts: 1928
Location: speedwell Tn.
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| Posted: Tue Sep 03, 2013 4:05 am Post subject: |
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| CasetheCorvetteman wrote: | | How do you plan to recalibrate the G2 now that youve moved it? You change it via on screen menus. |
The g2 on my nec is adjusted via knobs and one easy way is a white image(I have done it with my Ecp during g2 checks)
Plus there is marks on the knobs (not mine but I used them as the reference point)
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CasetheCorvetteman
Joined: 09 Nov 2008
Posts: 6326
Location: Australia
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| Posted: Tue Sep 03, 2013 7:26 am Post subject: |
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No mate, those are set and not touched, or youll have issues.
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Tinman
Joined: 09 Mar 2006
Posts: 1326
Location: Carson City Nevada
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| Posted: Tue Sep 03, 2013 8:10 pm Post subject: |
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| CasetheCorvetteman wrote: | | No mate, those are set and not touched, or youll have issues. |
Which is why I kept my mouth shut..... How many articles have we written to NEVER touch the G2's on an NEC unless instructed to do so?
I do know a shortcut to get it pretty much correct without the use of the entire alignment procedure. More on that once the video actually works again.
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CasetheCorvetteman
Joined: 09 Nov 2008
Posts: 6326
Location: Australia
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| Posted: Wed Sep 04, 2013 6:08 am Post subject: |
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Yeah lots, and it can all be done within the KELVIN menu if the pots are where they should be
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the big E
Joined: 20 Apr 2013
Posts: 1928
Location: speedwell Tn.
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| Posted: Tue Sep 10, 2013 5:34 am Post subject: |
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Guys if it helps at all I never touched the output boards knobs at all so its still set to the tubes in the set
The only knob I touched is the g2 for the green tube only(which I can easily reset with a white image if needed)
Now I haven't heard back from curt yet if he has a working board or not
I looked and the output board has a lot of knobs I wouldn't even dream of touching(yes they are tempting but I know those are also going to be a no to for me as I have no service manual) the gain board itself has three knobs that are accessible with the board in the set(not touching those either unless told to)
I am currently in the works of converting my marquee form 8 to 9 inch tubes
I am toying with the idea of getting two dwin sets and doing a stack for 3d soon(provided I can get two of the same model) as a blend is more then I need
Still want to get the nec working as I want to see how it stacks up to my marquee(getting some modded boards with the 9inch tubes  )
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CasetheCorvetteman
Joined: 09 Nov 2008
Posts: 6326
Location: Australia
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| Posted: Tue Sep 10, 2013 6:19 am Post subject: |
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Its not easily reset if the AKB was on or if you touched the KELVIN button ( or went into KELVIN menu ) though.
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the big E
Joined: 20 Apr 2013
Posts: 1928
Location: speedwell Tn.
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| Posted: Tue Sep 10, 2013 6:32 am Post subject: |
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| CasetheCorvetteman wrote: | | Its not easily reset if the AKB was on or if you touched the KELVIN button ( or went into KELVIN menu ) though. |
The akb setting has always been off(due to the line it creates and the edge of the screen) and I never messed with the kelvin button
There is a lot of things I am still getting used to on the set(one is the larger then normal remote) but I can't belive how easy it is to work on the set(replaceing boards if needed)
I still don't see how one would go about replacing tubes in this beast(that's got me stumped)I see three screws on the sides but that's it as far as I can see
I ask as I may be getting some spare tubes for the set and it would help to know since I don't have a service manual and its not set up like my marquee
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CasetheCorvetteman
Joined: 09 Nov 2008
Posts: 6326
Location: Australia
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| Posted: Tue Sep 10, 2013 7:41 am Post subject: |
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Remove the 4 screws you loosen to angle the tubes and slide them out the front of the set. Piss easy 
Adjusting the G2 pot was a very bad idea, it is like a reference setting for the electronic controls. Sure glad you never molested the pots on the GAIN CTL or VIDEO OUT. Then youd be proper f***ed.
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the big E
Joined: 20 Apr 2013
Posts: 1928
Location: speedwell Tn.
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| Posted: Tue Sep 10, 2013 2:57 pm Post subject: |
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| CasetheCorvetteman wrote: | Remove the 4 screws you loosen to angle the tubes and slide them out the front of the set. Piss easy
Adjusting the G2 pot was a very bad idea, it is like a reference setting for the electronic controls. Sure glad you never molested the pots on the GAIN CTL or VIDEO OUT. Then youd be proper f***ed. |
That is easy
Case the g2 knobs has a line on each of them as reference point to return to that someone else put on there at some point before I got the set and that's the only resion I moved it as I needed to see if the green tube was in fact reciving the video signal(which it is but in negitive form) I have since moved it back to the marked position and haven't touched it since(I told tinman it has those marks on the g2 knobs if I am not mistaken)
I didn't never touch the pots on the boards(to many to close together for my comfort)
Now once I get the boards from curt I will update(still haven't got a reply back yet)
Right now I am in the process of upgrading my marquee with 9inch tubes(fyi the vision series has cases made by pinaferia so they look a lot better then the stock e home cases) just waiting on the parts
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CasetheCorvetteman
Joined: 09 Nov 2008
Posts: 6326
Location: Australia
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| Posted: Wed Sep 11, 2013 1:57 am Post subject: |
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Just cause there is a line doesnt mean that is where it belongs, they didnt leave the factory with a line.
Youll need to set it back using a proper method.
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the big E
Joined: 20 Apr 2013
Posts: 1928
Location: speedwell Tn.
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| Posted: Wed Sep 11, 2013 2:43 am Post subject: |
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| CasetheCorvetteman wrote: | Just cause there is a line doesnt mean that is where it belongs, they didnt leave the factory with a line.
Youll need to set it back using a proper method. |
I know and I will set it properly as soon as I get the replacement board as I want it to give me its best
Where it was marked makes the set seem dim and I want it back to factory specs
But the marks made on the g2 knobs aren't mine they were on there before mike got the set so neither of us messed with them from factory till I checked for the negitive image on the raster
I noticed a couple test points on the neck boards is these for testing the voltage???
My Ecp has test points on the neck boards and so does my marquee
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CasetheCorvetteman
Joined: 09 Nov 2008
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Location: Australia
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| Posted: Wed Sep 11, 2013 4:53 am Post subject: |
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Where it was matked may seem dim, but that is not relevant, pressing KELVIN will automatically adjust levels, and you can still adjust brightness and contrast.
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the big E
Joined: 20 Apr 2013
Posts: 1928
Location: speedwell Tn.
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| Posted: Wed Sep 11, 2013 4:56 am Post subject: |
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| CasetheCorvetteman wrote: | | Where it was matked may seem dim, but that is not relevant, pressing KELVIN will automatically adjust levels, and you can still adjust brightness and contrast. |
Ok I understand it just seems my marquee is brighter(maybe its the difference in optics)
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CasetheCorvetteman
Joined: 09 Nov 2008
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Location: Australia
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| Posted: Wed Sep 11, 2013 6:28 am Post subject: |
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You never calibrated either of them, so im not sure how ya figure that!!
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the big E
Joined: 20 Apr 2013
Posts: 1928
Location: speedwell Tn.
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| Posted: Wed Sep 11, 2013 6:45 am Post subject: |
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| CasetheCorvetteman wrote: | | You never calibrated either of them, so im not sure how ya figure that!! |
Haven't got to on my nec(due to the issue) but what makes you think I haven't on my marquee ???
I have correct grayscale on my marquee as per this site http://www.etechvideo.com/techtip1.htm and yes it is brighter then my nec
FYI I did the grayscale on my ecp(it was tricky with that set) and on my marquee by myself
I asked mike if he had ever had a pro set up the set he said no but the guy he bought it from(some rich guy) had it done but I am wondering if it was done right as the user brightness was at max I forget what the contrast was at but what got me was that the contrast was half way(typical) now I should have been seeing the raster with no feed but I wasn't
Now if it had been set up properly then whoever set it up messed with more then they were supposed to as when I turned up the g2 to check for negitive video it was a 1/8 from being as bright as my marquee is now(didn't mess with the g2 knobs till lately during the time I was checking for a video feed on the green tube
I know it wasn't the one who is normally on here so I am wondering if it had been properly done right
Heck as it is right now the overall picture brightness seems in between my Ecp and my marquee heck the nec should produce about the same as the marquee
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CasetheCorvetteman
Joined: 09 Nov 2008
Posts: 6326
Location: Australia
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| Posted: Wed Sep 11, 2013 7:25 am Post subject: |
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Yes but you said you never went into the KELVIN menu, they could be way down for all we know!!
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Tinman
Joined: 09 Mar 2006
Posts: 1326
Location: Carson City Nevada
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| Posted: Wed Sep 11, 2013 6:40 pm Post subject: |
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| CasetheCorvetteman wrote: | | Yes but you said you never went into the KELVIN menu, they could be way down for all we know!! |
Forget it.... You just cannot explain NEC's to everyone.
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