CurtPalme.com Home Theater Forum

[mp20748]

A few more from a not so warmed up projector...


1080P almost untouched (no sharpening), with only saturation lowered

[mp20748]

I'm using my sons PS3 for these following shots. My Starship Troopers Blu Ray will not play in my BDP 360.

Totally Untouched 1080P...

[mp20748]

Still trying out the PS3.



Untouched 1080P into my lowly CRT

[Nashou66]

Did some CPC work this morning on the left PJ, much sharper Grid lines, this also helped the blend zone on that side. Tomorrow i'll try to work on the right half. Still need to tweak it more as the grids move with focus ramping. Wish there was more room to maneuver the focus coils! Arrggg!!!!








Athanasios
[/img]

[LOTREE]

I picked up my Wilsonart DW screen today and spent the nite after work, 4hrs in total, moving the projector back and tweaking EVERYTHING, all but the G2 and flare controls. Love the material so far, well controlled hot spotting. All images are DVD's with unsharpened mask turned on in ZoomPlayer MAX, 768p. I'm impressed for what this quaint projector can do but I know I can get more out of it yet.

Astigmatism and Bias Focus on the RGB tubes adjusted. Lenses refocus and aligned, overall convergence done 3x.R1 and R5 pots adjusted on the Waveform Generator board to correct red color shift on right side of screen. Remaining pots R2-R3, R6, R7 adjusted for better grey scale. Still a lot of tweaking to do and adjustment with the G2 power controls. I won't be doing that until I get a grey scale calibrator.

All are 70" wide

[dvh99]

1 thing about the ringing
i got curious and mailed vdc
then a tech replied and told me the ringing is yoke related and by swapping out the yokes this problem should be gone.
unfortunately i dont have the reply mail anymore from vdc cause i had to reinstall windows because of some very weird ie failure.
i have got zero ringing on the left side in my marquee so there is surely a way to get rid of it completely.

[mp20748]

A few tweaks later...


1920x1080P into my Hot Rodded 9500LC..

[J Kildare]

[Nashou66]

Just watched this movie tonight, Awesome Movie!! Cliff would Love it! Any one know what it is?









I moved the cam on the last one while it was snapping, oops


Mike those last shots look nice, i see what those last changes can do!

Athanasios

[dvh99]

yes it is set at short retrace and at 1080p i have no ringing at all
i will post some screen shots later so you can see by yourself.

[menec]

So what did you change to get rid of the ringing?! Or was your Marquee ringing-free right from day one? I would be really interested in a solution that doesn't require a VP...

[dvh99]

yes it was ringing free from day 1 i guess im just lucky
38p-15297st is the serial number
what the heck is a vp
if you want serial numbers from different parts in the pj just let me know.

[menec]

You'r lucky! I get the ringing even on 1080i when set to short retrace.
From the "ST" in your serial # I guess this unit was made for stereoscopic projection. Maybe those machines have some improvements that eliminate the ringing?

VP = Video Processor. Can be used to adjust timings to get rid of the ringing.

mp20748: Any progress on the experiments you were doing or any success in fixing the ringing on the VIM or HDM?

[Nashou66]

If you shorten the HDM cables it might help. its the capacitance in the Deflection coil windings that also cause the problem( TSE info). Some Deflection coils will ring more than others. Why? Who knows, maybe the batch of copper was better in one set than the other, maybe a slightly heavier gauge its all speculation.

I really dont have the ringing at my res for the blend, 1064x800p@72 for each PJ. I am going to try 1064X1200p@72 soon to see how that looks.

Nashou

[dvh99]

hi nashou, i dont really believe in better batches.
i have zero ringing at 1920*1080 72hz.
its really some coils that cause the ringing according to vdc and i believe them cause he gave me the part numbers.
as i remember the mail it were 2 coils that were responsible for the ringing so both have to be swapped.
i would mail vdc they certainly can tell you how to obtain the ringing free coils.
expect somewhere around 24:00 to get pictures.
btw retrace long and short doesnt bring in the ringing.

i am using a pc with a ati4890radeon and powerstrip.
here are the settings.

[mp20748]

[mp20748]

[dvh99]

hi mike when i am at it i will try to shoot some photos from all of my coils and see if i can find the part numbers on them.

i havent tested the pj with the hdmi vim but will do so when i get it from moome
maybe its the correct timing through powerstrip and therefore i am curious if the ps3 will show me the ringing.

[Nashou66]

Your have no ringing because your timings are what they should be for no Ringing. the large back porch of 316 and the timing value of over 1.5us is helping you achieve no ringing. lower your timing values and ringing will rear its ugly head. Also if you keep the raster over to one side it helps, but with that large back porch you should have no problem. Also Everyone with a marquee should keep the sync timing at 1us or higher.

Athanasios

[dvh99]

hi nashou we will see when i get my hdmi vim and hook up the ps3 if the ringing appears, im really anxious to see what happens.
btw my pics are all over 1.5mb so i cant post.
ill put adobe photoshop on my pc so i can compress it as a jpeg of approx 100kb.
that will happen tomorrow cause i will be watching a movie now

hor freq 80.93
ver 72hz

and mike really zero ringing 3 people have looked at it and they dont see it either.