[clopez]

Hi guys,

Over the weekend I redid the set full setup on my machine, except physical movement.

After about 15 hours of total work I have a very square screen. All the dots are almost over each other (and I do not even have point convergence board), except in the bottom right and that should be easy to fix. I had to adjust the tilt-phase in the service menu to get such a square screen


What I am seeing now is like a very faint outline when a dark image is against a bright one. Almost like a faint ghost image of each color. Most people may not recognize it but I do. It has also appeared on previously stored memory settings so I know it must be something with the mechanical setup.


I can't figure it out. The dots look tight, and the astig looks great. I may be missing something.


a) I have checked the cabling

b) turned off different colors of and it still appears


I am almost afraid to mess with it because everything looks sooo good. I watched HDTV football yesterday and that redeemed my faith in my projector.


clopez

 

[BenY]

clopez,

If you have an external source of grid and dots, see what happens when you test your setup with the external signal.

In the NEC PG the internal signal is fed to the drive board so it actually bypasses all the front circuits.

you could also have reflection inside the feeding RGB cables,and it`s showing due to the better setup.


Yuval.

 

[Jesse S]

Quote:

when a dark image is against a bright one

Sounds like "halo'ing" to me. It's unavoidable with our air-coupled NEC's and the biggest reason to move up to the liquid-coupled XG models (110LC/135LC). The amount of halo is related to your contrast, if you can run contrast lower the halo intensity will reduce.

 

[WanMan]

My RPTV has a nasty halo problem. The opening credits to the 9th Gate bring out the halo like no other movie. I wonder if I could capture this condition ...

 

[clopez]

Hi guys,

Thanks for your response.s

It appears that the raster is folding in on itself as either side and creating a form of ghosting and it is really close to the edge due to this folding.

(Shifting, or amplitude does not impact raster 'folding'.

I have seen this before, but I cannot remember how I fixed it (I think it had to do with the porch settings).

It now creates a faint bright line at the top (It is not the AKB line).


I think I can live with it, but it concerns me with the rater appearing so close to the tube edge.


Thanks,

clopez

 

[Jesse S]

If the image is folding back over itself on *both* edges then about the only adjustment that would affect that is to increase your horizontal front and back porches in Powerstrip. I've noticed that my 6PG begins to streak if the porch settings are too close to 0, backing them down to at least 20 removes the streaking. Assuming you even use a HTPC...


Generally, you only getting folding on 1 side when the image is "pushed" past the raster edge with the sync (position) controls.

 

[Tinman]

Check blanking as well.


Marc

 

[clopez]

Hi guys,

It appears to be the porch settings.

However, I will not try to fix it. This is the first time where my convergence is really nice over approx 98% of the screen, and I do not have a convergence board.

The image is very 3d and smooth on all movies. It is the best setup i have attained. While I have lost some of my "sharpness" the image is very incredible. Even my wife make a comment on how it looks (and she is already jaded to the many times i make a tweak and she did not see an improvement).


Thanks again,

I will try to enjoy may picture for the next 3 months. I am getting a sencore kit to calibrate my grayscale then.



clopez

 

[Jesse S]

What resolution and refresh are you using now?


I played with 1280x768 but went back to 1280x720p (@72hz for both).

 

[EC]

Jesse,


Clopez was nice enough to send me some custom resolutions for the FE CS-1 / CS-2 for 720P in an attempt to solve a wave problem with component interlaced in on the CS-1. I tried the scalers built in resolution of WXGA (1366* 768 or close to it) at both 60 Hz and 72/75 Hz while experimenting. At the 70+ Hz, you could see "stuttering" on the pans just like a poorly dialed in HTPC. The higher the refresh rates the more pronounced the stuttering. At 60Hz the stuttering no longer appears or is visible to me. Maybe, scalers or at least this one doesn't have enough horse power to run at higher refresh rates. If I was a betting man I would say Clopez is running 60hz as a refresh at 1280 * 720.

 

[clopez]

Hi Guys,

Eric is correct.

The reason I called it an anomily is that I used this custom resolution before (for the past 6-9 month based on the file date). It is until I did the last astig and played with the service menu to adjust the tilt phase to get a square screen that I start noticing this.


clopez

 

[clopez]

Okay,

The ghosting problem appears to be on one gun, the red, and a seperate problem from the raster wrapping.

I now have to find out why the RED gun is creating a ghost image.


Thanks,

clopez

 

[Tinman]

Try switching your red cable to another color and see if the ghosting follows. If it does not, time to look at the video boards. I am sure BenY can tell you this as well, but I have found that a lot of caps are deteriorating on the Video output board in the PG's. This could aggravate your problems.


Marc

 

[clopez]

Hi guys,

I think the problem was always my FE CS-1.


When I first first was playing with my projector I unplugged the the red channel from my component input. When I plugged it back in the FE behaved as though the component connection was loose (the red would flicker on and off) no matter what i did it behaved flukey. I finally got it to have red show continiously.

Well today after I turned off the FE CS-1 unit for 10hours everything now works perfectly.

No raster wrapping effect, no dropouts of the red signal on the component input, an no ghosting on the red crt.


I really have to find those HT-gremlins.


Thanks for everyones help.

clopez

 

[Jesse S]

Is it overheating?


EC-


No idea I've used an HTPC from day 1 and my pans are flawless at 71.928hz+Reclock audio renderer.


PS. Guess who might need some help soon to ceiling mount his pj?

 

[EC]

Clopez,


Funny you mention the red on the CS-1 I had a similar problem, I was messing around the back hooking up some cables on my pre pro a few weeks back and must have loosened the component cables going to the CS-1. Went to watch a Agent Cody Banks and his skin looked funny and the Ferrari he was driving was green and not red. I knew this wasn't right. I could see the red gun was functioning. After some investigation, the red component cable was just barely attached to the CS-1. Pushed it back in - same result. Not until I put the unit in standby and out again was everything ok. Also when I first received the CS-1 (it was a demo) it was doing some whacky stuff but once I did a factory reset - everything has been functioning perfectly other than that one cable incident and that wave bug with CRTs when using interlaced component in.


Jesse,


The CS-1 runs fairly cool and has side vents no top vents so I don't think overheating would be a problem unless the CS-1 is stacked on top of a class A power amp. You should have seen my first attempt at HTPC - there was more stuttering than a Porky Pig film fest. I will definitely reciprocate and help you ceiling mount your beast. I just hope I'm in town - its pretty bad when your house sitter and her friends watch more movies in your HT than you do! They watched the LOTR TT yesterday.