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Discussion Starter · #1 ·
Hi,


I just hooked up my new Philips DVP9000S DVD player to my Benq using HDMI -> DVI.


At 720p and using the anamorphic viewing mode the picture is amazing, but I notice a good deal of stuttering on pans.


I notice that my Benq is reporting a 60 Hz signal but as we all know PAL is 50 Hz. Could this be causing the stutters?


I have tried all kinds of settings on the DVD to no effect. Could it be the Faroudja chip in the player or is the Benq to blame?


Would greatly appreciate any input!


/Kenneth
 

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Hi,


That is a known problem of the 8700. Unfortunately the Benq can't sync to 50hz signals when the input signal is 720p or 1080i. It will always be displayed in 60hz wich causes this tearing effect.

This problem has already been discussed on the forum.

Apparently Benq tried to fix this but nothing really happend.....Someone loaded the Firmware from the Runco cl-710 (Benq OEM) onto the 8700 and that fixed the problem, so this is only a software related problem.
 

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Discussion Starter · #3 ·
Ahhh...I was afraid my Benq would be th cause!


So now the question is whether I should keep the DVD-player and stick to 576p or switch t component.


Thanks for your reply Riddick!
 

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Discussion Starter · #5 ·
Quote:
Originally Posted by Jules Dollah
My 8700+ syncs to 720p 50Hz just fine...?
Via DVI?


What payer do you have?


/Kenneth
 

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Discussion Starter · #7 ·
Well then I'm more confused then ever!


Would you recommend me to return the Philips and try another player?


I'm not sure the palyer you mention is available in Sweden, but maybe another would work?
 

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@jules:


The Benq osd says "50hz" but the refresh rate really is 60hz. Try a movie with long horizontal pans like lotr1 (Battle right in the beginning) than you can see this artifact.
 

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Quote:
Originally Posted by Riddick
@jules:


The Benq osd says "50hz" but the refresh rate really is 60hz. Try a movie with long horizontal pans like lotr1 (Battle right in the beginning) than you can see this artifact.
I'll try that tonight.
 

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@jules

I have the Yamakawa 365 connected via DVI to an 8700+, to verify a change to 50Hz you need to listen for a change in the colour wheel speed going from 720P60 to 720P50. As posted above the PJ will indicate on the display a change to 50Hz but the c/w speed stays the same. If you repeat this using 480P60 and 576P50, still using DVI, this will result in an obvious change in the c/w speed.
 

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Riddick, there is no chance we can get a hold of a Runco 710 firmware is there? I'm getting sick of not having true 59.94 hz support with DVI. :(


BTW, the sync problem also occurs over analog VGA too. I believe only component input will result in the color wheel speed change (excepting the 480p and 576p resolutions, which I haven't tested). I tested this with [email protected] hz with my VGA-to-component transcoder hooked up to my HTPC a few months ago.
 

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It would be great if "somone" could post a link to the cl710 firmware........ :)
 

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Sorry for getting off topic - but does the PE7700 have this same problem with Pal and DVI and syncing with 720p or 1080i?
 

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I sent an email yesterday to the BenQ EU Service Center about the issue, I'll let you know if they answer. However, I have never once been disturbed by any jerkiness using this projector, not more than anything else I have seen. I'd like consider myself kind of picky about such issues so that's why I thought it was strange seeing this thread. I use both R1 and R2 movies and I never even though about this issue before I saw the thread. I will check for any change in the colorwheel speed next time it's movie night :)
 

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I've checked for C/W speed changes by listening. When going from 480p to 576p there is a change in C/W speed. It stops and then starts again. But it sounds like it ends on the same speed...?


When going from 480p to 720p 50Hz or 480p to 720p 60Hz the C/W doesn't stop and start.


I've looked at the scene in LOTR 1 using 576p 50Hz and 720p Hz, but I can't really see any difference. If there is any it's very small.
 

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Discussion Starter · #17 ·
My PJ clearly indicates 720p / 60Hz on the OSD in the lower right corner when it locks on the signal. don't yours?


Even if you switch input and then switch back to DVI?


/Kenneth
 

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This is the reply from the BenQ Service Center:


"Dear Sir,


Have you noticed any problems with the videoquality on your projector yourself .

These forums often mention very small obscure issues that 98% of the people

don't use, need or see. They just enjoy using their projector with good

videoquality. If you enjoy the good videoquality of your PE8700, i would not

advise to do anything about it. Only if you have specific issues with 50Hz as

mentioned below and you actually get video tearing on your projector than i

would suggest to take action. If you don't have this specific 50Hz issue or

don't use this specific setup than there is nothing to gain by taking action on

it. The 50hz issue some PE8700 (+) models can experience can be solved by a

firmware update from Mainteq. As i mentioned before i would only send the

projector in for service if you think it is really necesary.


With kind regards,


Michel Geers

Product Technical Specialist

BENQ Europe B.V"
 

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Hmmm. It would be nice if they can email or link a firmware upgrade to you - then you (we?) can update our projector's ourselves. Benq.com already offers a firmware upgrade download on their website (1.04 only though, which my 8700 already has).
 

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Quote:
Originally Posted by maxleung
Hmmm. It would be nice if they can email or link a firmware upgrade to you - then you (we?) can update our projector's ourselves. Benq.com already offers a firmware upgrade download on their website (1.04 only though, which my 8700 already has).
Max...... rumor has it that what we really need is the firmware update for the Runco CL710...... anyone have any friends with Runco access?
 
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