Panel: Infocus Powerview 820
Q. I have been using my DIY projector set up for a couple of months now, and I have only recently noticed a slight problem with the image and wonder if anyone has experienced the same thing.
When watching TV or a Video through the composite/s-video, I have no problems at all with the image - fast horizontal or vertical action is clear with no blur. However, when I watch a DVD using my PC-based DVD player, the panel "struggles to keep up" with fast horizontal movement. I don't know how else to describe it. It works fine with fast vertical movement, but not horizontal. Also, I can just about see very faint reddish vertical lines (about 20 of them, equally spaced across the whole image) - is this a very mild form of macrovision ?
My PC DVD player works perfectly with my usual PC monitor, and only has these difficulties with the panel.
Can anyone help?
Thanks in advance
Q. I have been using my DIY projector set up for a couple of months now, and I have only recently noticed a slight problem with the image and wonder if anyone has experienced the same thing.
When watching TV or a Video through the composite/s-video, I have no problems at all with the image - fast horizontal or vertical action is clear with no blur. However, when I watch a DVD using my PC-based DVD player, the panel "struggles to keep up" with fast horizontal movement. I don't know how else to describe it. It works fine with fast vertical movement, but not horizontal. Also, I can just about see very faint reddish vertical lines (about 20 of them, equally spaced across the whole image) - is this a very mild form of macrovision ?
My PC DVD player works perfectly with my usual PC monitor, and only has these difficulties with the panel.
Can anyone help?
Thanks in advance
I also own a PowerView 820 and have noticed the effect you are describing. Search the forum for "horizontal splitting" - that's what I called it.
I used my PV 820 with the TV-4000 line doubler... the results were excellent *except* for the splitting.
I also noticed that s-video straight in doesn't produce the effect, but the image is smaller than it full-frame, and not nearly as clear - seems to even be a lower frame rate, etc. Not good.
I'm afraid this is just something you'll have to live with with the PV 820 and VGA-in.
You might try turning the contrast on the panel all the way up, and then adjusting the contrast to desirable levels from your source. I believe I was able to reduce the effect this way - but it never disappeared entirely.
Since you're going the HTPC route... try sending the panel different refresh rates. This panel seemed to like almost any rate I could throw at it (from different like doublers.) You might minimize the splitting even further by sending it a certain refresh rate that it likes.
It's a real shame that this otherwise wonderful panel suffers from this symptom. It may sound silly, but try to "live with it" for a while... I seemed to notice a strange psychological effect where the visual centers of my brain partially compensated for the splitting effect after a bit of focused, yet non-scrutinizing viewing.
I'd be very curious to know if you can get rid of it or minimize it further through experimentation. Please post again with your results.
-Schmanthony
I used my PV 820 with the TV-4000 line doubler... the results were excellent *except* for the splitting.
I also noticed that s-video straight in doesn't produce the effect, but the image is smaller than it full-frame, and not nearly as clear - seems to even be a lower frame rate, etc. Not good.
I'm afraid this is just something you'll have to live with with the PV 820 and VGA-in.
You might try turning the contrast on the panel all the way up, and then adjusting the contrast to desirable levels from your source. I believe I was able to reduce the effect this way - but it never disappeared entirely.
Since you're going the HTPC route... try sending the panel different refresh rates. This panel seemed to like almost any rate I could throw at it (from different like doublers.) You might minimize the splitting even further by sending it a certain refresh rate that it likes.
It's a real shame that this otherwise wonderful panel suffers from this symptom. It may sound silly, but try to "live with it" for a while... I seemed to notice a strange psychological effect where the visual centers of my brain partially compensated for the splitting effect after a bit of focused, yet non-scrutinizing viewing.
I'd be very curious to know if you can get rid of it or minimize it further through experimentation. Please post again with your results.
-Schmanthony
Just wanted to add... I never saw any of the red lines that mentioned. Doesn't sound like Macrovision. VGA would be Macrovision free anyhow.
Make sure the panel is not getting too hot... I've heard about strange visual artifacts similar to what you're describing from panels that are beginning to overheat.
Make sure the panel is not getting too hot... I've heard about strange visual artifacts similar to what you're describing from panels that are beginning to overheat.
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