View Full Version : LG BH-200 and IR


fistofsouth
06-07-08, 10:05 PM
I searched for this topic as an individual thread and in the BH-200 related threads, but did not see this mentioned. If there is a discussion on this topic please re-direct me, but otherwise:

I love my BH-200, but I have noticed a strange quirk; it seems to suffer from Image Retention. This is generally not something you would notice during the playback of a film, but when still opening credits or menus are displayed a small shadow of their shape will remain on-screen until a moving object erases this. I have Samsung LCD and previously used a Toshiba HD-A2 as my HDM Player and never had this problem using that combination. My connections and TV settings are the same; in fact when I got my 200 I simply removed my A2 and used the same HDMI cable and port (HDMI2) for my 200 that I had been using on the A2.

I have seen this occur on both HD DVDs and Blu-ray Discs. I initially noticed the problem when playing Lion's Gate BDs. I purchased a bunch of LG BDs a few months ago before I had a BD Player of any kind so when I got my BH-200 those were the first films I played. I noticed it during the opening credits on Saw, then on Saw 2, then on Young Guns and then on Total Recall. Since I never noticed anything like that n my HD DVDs while playing them on my A2 I figured that it was something realted to the way LG BDs are authored. Then I put in "The Thing" on HD DVD and saw the same thing and have since discovered it happens on all my HDM. I have not tested any DVDs yet (didn't think to), but placing my QDeo setting on "user" seemed to help a little.

Does anyone else have this problem?

Any suggestions for settings to eliminate the IR?

MEC2
06-08-08, 02:31 PM
I have seen the same thing on my LCD with my BH200, but thought it might be the LCD - at the beginning of PotC:CotBP, the Disney intro seems to be ghosted in hard to see green trails. When the screen goes past the Disney splash and into the movies, it wiped away. But I did notice it.

Did not notice it on my DLP but I will look to see...

MEC2

MEC2
06-08-08, 02:41 PM
Nope, not on the DLP - thinking it's some artifact of the LCD and the content, can't think of anything the player would do to cause it.

Will try again tonight when it is pitch black to be sure...

fistofsouth
06-12-08, 01:40 AM
Nope, not on the DLP - thinking it's some artifact of the LCD and the content, can't think of anything the player would do to cause it.

Will try again tonight when it is pitch black to be sure...

Interesting, but I wonder why my panel does not show this IR when using my Toshiba HD-A2? I've noticed the IR issue with the 200 on several HD DVDs that did not show the IR on the same LCD, using the same HDMI cable, using the same HDMI input on the TV (HDMI2) with the HD-A2.

I noticed that the IR was reduced after I changed the QDeo setting to user and that makes me think that perhaps some further adjustments on my BH-200 could eliminate the issue altogether.

Jeff D
06-13-08, 11:17 PM
how long does this last? And could it actually be an issue with I vs P and the scaler? How did you have the output of the HD-A2 configured and is the BH200 configured the same?

Also, what about the 24fps setting on the BH200?

Those are my best gueeses, but I've only owned the player for like 3 days...

fistofsouth
06-14-08, 07:51 PM
how long does this last? And could it actually be an issue with I vs P and the scaler? How did you have the output of the HD-A2 configured and is the BH200 configured the same?

Also, what about the 24fps setting on the BH200?

Those are my best gueeses, but I've only owned the player for like 3 days...

Thanks for the reply.

The BH-200 is set to output 1080i just as the A2 was. I have a 768p set, but the set scaler seems to do a better job with 1080i than it does with 720p or 1080p. Since it is set to 1080i I don't have it set for 24fps.

The IR will last until something comes across the screen to "wash" it away. So with the 3:10 to Yuma BD; the ghost of the title remains on screen until the first scene comes up. With most tiles that is how the IR goes away; the first scene comes up. With a few titles there seems to be a screen wipe that takes place during the credits that removes the IR of the previous text before the next set of text is displayed.

Jeff D
06-14-08, 10:51 PM
So with the 3:10 to Yuma BD; the ghost of the title remains on screen until the first scene comes up.

Wow, that's odd. I don't really want, but as an engineer I'd love to have that on my set. I'm left with a lot of questions about what's really going on. It would be interesting to know what happens with DVDs. I'd guess it would be the same, but how about photos? Photo of "black" and normal photo. Display normal photo and then the black.

My guess is it's the LCD, either settings or configuration. When the screen transitions to black the LC helix doesn't have enough of a signal to reset it to black from the white *this is the most extreme change any LCD has to do*. Another question what is your "black" setting for the Bh200? And do you have your display properly calibrated or is it at the default "showroom hot"? But... it could be the levels output by the BH200, I don't understand enough about everything involved here, so this is all just dumb guesses and questions.

I wish I could help, but it's an interesting problem to understand. It would be great to be able to point the finger at the guilty party to get it fixed.

champer
06-15-08, 01:59 AM
Thanks for the reply.

The BH-200 is set to output 1080i just as the A2 was. I have a 768p set, but the set scaler seems to do a better job with 1080i than it does with 720p or 1080p. Since it is set to 1080i I don't have it set for 24fps.

The IR will last until something comes across the screen to "wash" it away. So with the 3:10 to Yuma BD; the ghost of the title remains on screen until the first scene comes up. With most tiles that is how the IR goes away; the first scene comes up. With a few titles there seems to be a screen wipe that takes place during the credits that removes the IR of the previous text before the next set of text is displayed.
it has an output for 1080P as well but the only way to get 1080P on the LGBH200 is with HDMI. and your tv gets 768P ? you got a pal tv in texas or how do u have a 768 resolution on tv ?

fistofsouth
06-15-08, 05:53 AM
it has an output for 1080P as well but the only way to get 1080P on the LGBH200 is with HDMI. and your tv gets 768P ? you got a pal tv in texas or how do u have a 768 resolution on tv ?

Most LCDs in the US are 768p sets. I have a progressive resolution of 1366x768, thus 768p, so the chip in my panel scales everything to 768p. Many manufacturers list 768p sets as "720p" for simplicity or marketing purposes, but there are very few (if any) LCD HDTVs with a resolution of 1280x720 (720p). I have a Samsung LN-S3251d, but there have been Sony, Sharp, LG and many other brands of both LCDs and Plasmas that are 768p. In fact there are currently 234 HDTVs on pricegrabber with that resolution:

Linkage (http://electronics.pricegrabber.com/plasma-lcd-televisions/p/197/st=filter/popup12%5B%5D=30:301)

Wow, that's odd. I don't really want, but as an engineer I'd love to have that on my set. I'm left with a lot of questions about what's really going on. It would be interesting to know what happens with DVDs. I'd guess it would be the same, but how about photos? Photo of "black" and normal photo. Display normal photo and then the black.

My guess is it's the LCD, either settings or configuration. When the screen transitions to black the LC helix doesn't have enough of a signal to reset it to black from the white *this is the most extreme change any LCD has to do*. Another question what is your "black" setting for the Bh200? And do you have your display properly calibrated or is it at the default "showroom hot"? But... it could be the levels output by the BH200, I don't understand enough about everything involved here, so this is all just dumb guesses and questions.

I wish I could help, but it's an interesting problem to understand. It would be great to be able to point the finger at the guilty party to get it fixed.

I don't have my set properly calibrated, but it is close. I followed the settings suggested by Home Theater Magazine, "Our measurements revealed that the Movie/Warm2 combo tracks near 6,500 Kelvin across most of the range. Below 30 IRE, the color temperature gets quite blue, but this spike isn't something we'd be able to fix through calibration and will only reveal itself with the darkest images. Beyond that, the color temperature is so close to accurate, calibration isn't necessary."

HTM Review (http://www.hometheatermag.com/lcds/906samsunglns3251d/)

So I am quite distant from torch mode, but not exactly calibrated either.

Still I'm not certain how it could be an issue with my TV since no other content HD, SD or otherwise displays this problem. In fact I had my Toshiba HD-A2 connected to the same input, with the same HDMI cable, displaying the same content and never had this problem. Furthermore adjusting the QDeo settings on the BH-200 seemed to lessen the issue while adjustment to the TV (changing Video Mode, changing the HDMI input used, changing the temperature settings, et al) have made no difference. My XBox 360 does not have this problem on the same TV when when viewing DVDs, Games or HD DVDs. My Mac does not display this issue using OS 9.6 or OS 10.4 while playing games, displaying photos or after I've left a static image on screen for hours.

Basically I've eliminated the content as a source; the BH-200 has the issue with HD DVDs while the HD-A2 and 360 add-on do not.

I've eliminated the HDMI cable as the source; I've used two different HDMI cables.

I've eliminated the HDMI connection as the source; I have used both HDMI ports as well as having viewed the same content via component with my 360 AO.

I feel the TV could be a culprit, but only to a limited extent. It could be that my TV is having some sort of issue with the BH-200, but I find it odd that the TV does not have similar issues with any other source device.

SO I think the BH-200 is the primary culprit, but I don't know why. I'll check my black level settings on the 200 when I get home.