CurtPalme.com Home Theater Forum

[illpanteraa]

hey guys ive been setting up my set and i found a problem when converging my red on to green in the pattern grid. it seems the red grid isnt square ive spent hours trying to line up the patterns but one corner wont line up

[Tim in Phoenix]

Hello


We are not psychic, what projector do you have?


.

[illpanteraa]

hey

[illpanteraa]

my bad its an nec 6xtra

[Curt Palme]

Reset the tilt and skew on all tubes to 50%. If one is crooked, then the main yoke on that tube needs to be rotated slightly.

[Curt Palme]

Reset the tilt and skew on all tubes to 50%. If one is crooked, then the main yoke on that tube needs to be rotated slightly.

[illpanteraa]

hey thanks for the response curt i tried this already i reset the skew tilt played with the yoke a little the horizontal line looks almost like a hockey stick i cant get the bow out i tried the keystone and pin cushion

[CasetheCorvetteman]

The phase is out.

[illpanteraa]

any ideas on how to remedy this wouldd be apreciated

[CasetheCorvetteman]

Go into the menu and set the PHASE until the lines are straight.

[illpanteraa]

thanx ill try that tonight but im pretty sure i fiddle with the phase on red too any way if i cant get it dailed in ill snap a pic that maybe will explain what im trying to describe

[CasetheCorvetteman]

The phase will adjust all three colours at the same time. I cant remember if it is left and right that correct the issue you describe or up and down.

A pic would certainly help us to help you.

[illpanteraa]

ya its only in the red as soon as i get a chance ill post a pic

[CasetheCorvetteman]

Righto

[illpanteraa]

these are the pics now i now the focus is out and nothin is in aligne i just wanted to show the curving of the red horizontal lines top and bottom no matter what i do i cant get it i hope the pictures can explain what im tryin to deal with
ive tried pin cushion and phase a key stoning blue is is fine

[CasetheCorvetteman]

Looking at that, i cant see an issue. It just needs abit of work.

Ok, you need to move the image to the center of the red tube face, then angle the red tube so it aligns in the center of the screen, when it seems to do, so that is ok. It needs to come down though, so with the cross hair, it lines up in the middle. The rest isnt important yet.

You need to center all the controls for the red before you do the above step

You need to reset all the "POINT" data, go to the "CONVERGENCE" menu and press CTRL and NORMAL at the same time, and it should ask if you wish to delete all POINT data. This is only if you have a point board.

Next, youll use the LINEARITY control, press CTRL and R and get to the red tube adjustment, and move the red linearity to the right. If it goes the wrong way when you press the right arrow, youve got the convergence plugs around the wrong way somewhere.

When the red boxes on the left and right line up with the same amount of gap, use the AMPLITUDE to make them line up perfectly.

Now, at the right edge, i see a slight downkick bend, correct the CENTER LINE with the BOW control, get it as straight as you can, THEN you use the PIN CUSHION and PIN BALANCE to correct the other lines. ONLY use BOW to do the center line of the cross hair.

The red grid is fatter on the left, so you need to adjust the KEYSTONE to get that to line up with the other grids, and go back to AMPLITUDE to get the size correct again.

Using KEY-BALANCE will help to level the image horizontally, and get the lines perpendicular across the whole screen.

By this point, you should have the red in alignment with the rest. It should all be pretty much perfectly lined up in the center of the screen before you move any electronic settings, so that means aim the red and blue, set focus, re-aim, move images of red and blue up or down to line up with green, aiming for all pictures in the middle of the screen.

Now when you get the red and blue images lined up for amplitude and linearity, you will have to re-check the centering of those 2 images on the tube faces, then re-aim angles of the blue and red, because when you move the linearity, the image center wont really move on the tube face, BUT THE EDGES WILL, and the edges will have moved in on one side, and out on the other, meaning the image will now be slightly off to one side of the red and blue tube faces. That will cause the image to loose focus where it gets closer to the tube face edges.

Once youve got it pretty spot on, use the POINT to get it perfect, and if youve got it all set up right, and it is square to the screen, it shouldnt need any POINT in the center area, and shouldnt need any along the cross hair either, around the corners shouldnt need more than 5 or so taps. If youve got POINT installed, you shouldve used that when you had the green set as perfect as you could get it, and use the point on green to get it perfect BEFORE you line up the other 2 colours.

It takes a fair while, but you want it done right, or the picture will look shithouse, and the projector will end up rooted.

[CasetheCorvetteman]

Your red optical focus is quite bad on the outer edges too, that is the front adjustment on the lens barrel.

[CasetheCorvetteman]

Read all this too.

http://www.curtpalme.com/NECPG_MechSetup1.shtm

http://www.curtpalme.com/CRTSetupGuide.shtm

http://www.curtpalme.com/TubeRasterSetup.shtm

[Curt Palme]

Boy, can you tell that Case has spent HOURS with his PG?

The main issue I see as Case has said is key balance for the top right and bottom left corners. It's a matter of playing with the controls and learning exactly what they do. Then, as he and I have, you will be able to look at a pix and go right to the control(s) that need adjusting. That will take some time though to learn exactly what each control does.

[Curt Palme]

Boy, can you tell that Case has spent HOURS with his PG?

The main issue I see as Case has said is key balance for the top right and bottom left corners. It's a matter of playing with the controls and learning exactly what they do. Then, as he and I have, you will be able to look at a pix and go right to the control(s) that need adjusting. That will take some time though to learn exactly what each control does.

[CasetheCorvetteman]

I did in the begining Curt!!

First time i set one up it took me quite a few hours, i can get the green grid pretty much spot on in 10 minutes now that i know what does what

[Jeremy112]

When I first got my NEC 9PG Plain, I was completely lost, it was totally different with the setup menu vs the 1272Q i had been working on before I bought my 9PG, it took me a few hours to figure out that my unfocusable image was due to the lens flapping (which the Sony did not have), ah being naiive about these things sucks doesn't it, but dont worry, if you stick with it and find it fascinating to watch the image come together on the screen as I do, then you will probably figure it out in no time.

You'll soon develop a love hate relationship with your NEC, but in the end it will reward you with a very fine image that has made me fall in love with the NEC CRTs.

I will admit though, of the CRTs out there the NECs setup menu can be a bit tricky to work around if your not used to it (and especially if its the first one you've ever messed with), but I like it because it is a great feature packed menu.

hope you get that image squared away so we can see it converged