sinotech 42" + ati 4870 setup

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yazzo

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I'm having some few issues trying to setup the sinotech 42" and the ati 4870, I can't seem to get it to display correctly? I'm using a dvi-hdmi converter + hdmi cable to connect the two. no matter which resolution I set it to, there are black bars on the side. Setting the sinotec zoom function to full stretches the image but that cant be right? Can anyone with a similar setup assist?

Thanks in advance.
 
have you tried a vga cable?

Mine displays perfectly with that..
 
Havent tried that yet, will see if i can get a hold of one.
 
Don't get the VGA cable. I have the same setup, HD4870 to a 47" Sinotec. Sinotec doesn't do 1080p with VGA. I've tried every cable, trust me.

The only way to get perfect 1:1 pixel matching is to get a straight DVI to HDMI cable..i.e. no converter on the graphics card. The TV picks up the connection as HDMI input and scales the picture if you use a DVI to HDMI converter. If you use a plain DVI to HDMI cable the connection is picked up as DVI and doesn't scale. You will need to get an additional cable for sound.
 
Yup, unfortunately thats correct.

I have a feeling it has something to do with the audio signalling channels on the HDMI cables that causes the grief :(
 
Thanks for the assistance, I'll get one of those instead.
 
I am using a DVI to HDMI converter and the picture is perfect.

Using Sinotec 42" and an old 1650XT graphics card.
 
i think I know what it is.

are you using windows 7?
do the fonts look blurry in this "small, letterboxed screen"

well, if that's the case, check your refresh rate, and set it to 60Hz Non-Interlaced. 30Hz Interlaced caused this black bars/smaller image to me too. (I don't know why, but Win7 defaulted to 30Hz interlaced?)
set resolution to 1920x1080


In the ATI CCC Drivers window though, you need to change one option too, it's a bar that you drag to the right, and it "zooms" your image - can't remember what the option is called though, but you will find it if you look around in the ATI CCC options


Also, I use a DVI-to-HDMI Cable
 
(Expanding on what Keeper said)

I don't have a Sinotech, but I have a philips connected to my pc (ATI 4870/windows7) and have bumped into this issue as well.

You basically have overscan, install the ati control panel (if you haven't already) and poke around for the overscan/scaling option, drag it all the way to the right. Or drag it to wherever 0% scaling is positioned, might be different across different versions of the ccc.

Make sure you set the ccc to advanced mode.

You also want to make sure your display settings are set to 1920x1080x60hz, the drivers might force it to 59hz which is fine as well. With it connected to your pc, 30hz and/or any interlaced format will be painful to use. The ATI control panel can help you here as well, there is section (HDTV setup or something like that) where you can configure what modes are exposed to the display manager.

So you shouldn't need a new cable to get setup how you want it.
HTH
 
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If you do that then the picture wont be crisp but it will fit the screen. The TV zooms in the picture so that the edges are cut off and the ATI control centre zooms out the picture so that it fits the screen. Quality will be lost as a result of the zooming in and out.
 
SaiyanZ said:
If you do that then the picture wont be crisp but it will fit the screen. The TV zooms in the picture so that the edges are cut off and the ATI control centre zooms out the picture so that it fits the screen. Quality will be lost as a result of the zooming in and out.
Click to expand...

not if you use the ATI Drivers and scale it to it's largest size that fits the screen perfectly
 
I have a Sinotech 32" LCD (720p) TV which I use as my main pc monitor.

Using a DVI-HDMI cable (R200), no converter. I select the hdmi source on my tv and it works fine. Screen rez is 1024x768. Been working fine all the time.
 
Voicy said:
I have a Sinotech 32" LCD (720p) TV which I use as my main pc monitor.

Using a DVI-HDMI cable (R200), no converter. I select the hdmi source on my tv and it works fine. Screen rez is 1024x768. Been working fine all the time.
Click to expand...

How do you do it, I tried it once and the resolution nearly made my eyes bleed.
 
Got the dvi-hdmi cable, the source now shows as "DVI1" on the telly (instead of HDMI1 with the adapter). Plugged both the dvi-adapter + dvi cable in and switched between the two sources, and it seems to be clearer with the dvi cable. So while this might be confirmation bias, I'm happy with the picture quality.

Oh and overscan wasnt the issue with the black bars, I had the zoom on the incorrect setting. I just assumed it needed to be set to "normal", but now that it's set to "full" everything is OK. ATI ccc set to 1080p 60hz + overscan at 15%.

Anyone have any idea why the "Desktop area" only goes to 1680*1050 in the ccc display properties? I have to choose HDMI TV to get 1920*1080.
 
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