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Discussion Starter · #1 ·
Like most people my new 507 displays a color inbalance tending to be too green for the most part. It seems the UM adjustments don't respond as my other non-HD CRT sets. Just playing around with the color and tint controls, I expected the picture to go to black and white with the color turned completely down. To my suprise I can't get the color out! I can still see reds and blues, greens yellows..... Is this typical of DLP/color wheel systems? Is this a good indicator of the gain and balance settings in the SM being off?


I have had some killer DVD and HD pics. Even some decent SD shots!
 

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Discussion Starter · #2 ·
Some pics with a FUJI 1400z 1.3Meg. Not high quality but they convey the gist.

http://www.alltel.net/~sb32511/TV/SD1s.JPG SD Dish feed through Model 6000U displayed on PC input. Model 6000U upconverted image to 720p

http://www.alltel.net/~sb32511/TV/SD2.JPG Golf OTA SDTV, Think it was NBC, WOWT Omaha. Upconverted to 720p then feed to PC

http://www.alltel.net/~sb32511/TV/SD3.JPG The Mummy Returns, TMC via Dish Network. SD upconverted to 720p by 6000U. PC in.

http://www.alltel.net/~sb32511/TV/SD4.JPG More of The Mummy Returns...

http://www.alltel.net/~sb32511/TV/HD1.JPG Leno OTA via 6000U and PC in. This was befor I found the STILL button :)

http://www.alltel.net/~sb32511/TV/DVD.JPG SWII AOTC via Component.

http://www.alltel.net/~sb32511/TV/Monsters-Inc.JPG Finally, the crap I got away from ;) 4x3 50" Toshiba SDTV
 

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I'm bumping this to the top! I see a lot of posts mention "green" in a negative light wrt the 507, but not sure best way to fix it. Is the set simply set up green similar to red push from CRT RPTVs? Paraphrasing the comments I've read:


Green too vibrant (unnatural or fluorescent - check out the quidditch scene in Harry Potter or the picnic grass in AOTC)


Shadow greens (check out 24 on Fox or Reign of Fire)


Olive tint to flesh tones


Overwhelming green when green is the dominant color in the scene (Matrix or Mash re-run)


I know all are related, but does everybody agree that there is a green tint to an uncalibrated picture? Or do some sets tend to be red?


I had success in reducing mine by simply reducing green gain in the SM but did not know if this was the best way. I've read here (Tom R?) that you should start with the offsets then the gains to tweak it out. Also, it was suggested to reduce G gain by X (reduce till the vibrancy looks good) then increase the G gain back by 1/2X and increase the R and B gains by 1/4X to balance the color.


If you are seeing all of the above (and don't have CF!) can some of the experts here help out?


Is it correct to start with offsets? If so, what souce material would be a good choice?


Is the "down by X, up by1/2X........" described above still considered the best way to go on the gains? Is it best to use this type procedure on the offsets as well?


I found reducing the G gain was enough for me, but again, wasn't sure that I had done the best job of it. Right now it doesn't matter for me as my 507 is displaying the 3 blinking lights problem and is going back to Tweeters.
 

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Discussion Starter · #4 ·
I guess I should clarify my intent of this post. I was getting a good picture out of the box. The SD pics above were good also. In some instances, such as low light/shadows green was coming through too much. I have since adjusted the service menue getting better results.


Here is a pic from todays matinee, A Knights Tale, this is after some SM tweaks. I'm happy with this today. Can't say about next week though.

http://www.alltel.net/~sb32511/TV/knights_tale.JPG
 

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Sorry, didn't mean to hijack your post. It did specifically say that there was too much green. I'm just trying to figure out if I have a bad set or if everyone's is a little (or a lot) green.


I would like some expert advice on how to tweak color. Not so easy.
 

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Discussion Starter · #6 ·
Never thought it as a highjack. Plenty of that elsewhere;)



For myself, color tweaking is almost self experimentation. I did use Supertoyz 437 PC tweaks with pretty good resultts. I think most sets are going to have their own personalities and require indevidual attention.


The original observation sparking this post is the fact that I couldn't get a black and white picture by turning the color all the way down. Kind of struck me as odd. This was on OTA HD via PC in and Dish 6000 STB.
 

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Agreed - I've taken the color all the way down several times and always end up with B&W.


If you wouldn't mind, could you look at my other post: 507 bad?????


Thanks
 

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Discussion Starter · #8 ·
Quote:
Originally posted by rocketcityhog



If you wouldn't mind, could you look at my other post: 507 bad?????


Thanks
Just did :)
 

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gpflepsen:

For what it is worth, I can think of two different possibilities for systematic differences between sets that may account for the need for several sets of SM settings, e.g., too much green:


1) Different light sources. The SM indicates that there are two possible bulb settings. Perhaps these bulbs have different light characteristics making one setting work fine on one TV and not so fine on another TV.


2) Different light strength. This may be total BS :) but I would think that the same bulb outputting on a 507 may produce different effects than on a 437.
 
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