Using LCD TV as monitor?

Rjupiter · 06-February-08, 06:52 AM

I recently bought a new bigger Samsung TV that replaced my LG TV. Well I decided, since the LG was only a couple of months old, that I would keep it and stick in on my computer and use it. I plugged it in to my computer with a HDMI to DVI cable and the pic shows up and the computer, win xp, caught it fine. The issue I am having is one of aesthetics and the pictures being off and blurry, the text is hard to read on the screen. I have tried different resolutions and setting, adjusting the refresh etc... but nothing seems to work. Is there something that I have just not tried that will get it looking sharp?

Oh, I have a GeForce 8800GTX 768MB.

Thanks & Cheers

Jobistober · 06-February-08, 07:02 AM

Is there an auto adjust on the TV? Sounds like the Phase and Clock settings in the TV aren't set right. Maybe try inputing straight to DVI or VGA on the TV instead of HDMI.

Rjupiter · 06-February-08, 07:09 AM

Quote:

Originally Posted by Jobistober


	Is there an auto adjust on the TV? Sounds like the Phase and Clock settings in the TV aren't set right. Maybe try inputing straight to DVI or VGA on the TV instead of HDMI.

Yes, there is and adjust on the TV but since I am using HDMI it won't let me adjust the Phase. Is that something I could adjust in my computer via my card?

The reason I didn't use straight DVI is cause this TV does not have that, its either VGA computer wise or HDMI or SVid on the TV side. I guess my thinking was why use VGA with a HD TV and computer card.

godling · 06-February-08, 09:50 AM

Quote:

Originally Posted by Rjupiter


	Yes, there is and adjust on the TV but since I am using HDMI it won't let me adjust the Phase. Is that something I could adjust in my computer via my card? The reason I didn't use straight DVI is cause this TV does not have that, its either VGA computer wise or HDMI or SVid on the TV side. I guess my thinking was why use VGA with a HD TV and computer card.

What model TV are you talking about? That will help ...

-godling

Rjupiter · 06-February-08, 09:54 AM

Quote:

Originally Posted by godling


	What model TV are you talking about? That will help ... -godling

Oh, I'm sorry I did forget to mention that. I am using an LG 20LS7D 20"

godling · 06-February-08, 10:04 AM

Quote:

Originally Posted by Rjupiter


	Oh, I'm sorry I did forget to mention that. I am using an LG 20LS7D 20"

It's resolution is listed at 1366 x 768p on the product website ( http://us.lge.com/products/model/detail/tv|audio|video_lcd%20flat%20panel__20LS7D.jhtml ). What res are you trying to run at? The closer to the above, the better your image will be. It also scales down to standard def TV, which I think is around 480p, which is crap from your perspective of games / text / video. So you've got to push your graphics card to the 1366 x 768 setting, or some close scale to that.

Rjupiter · 06-February-08, 10:09 AM

Quote:

Originally Posted by godling


	It's resolution is listed at 1366 x 768p on the product website ( http://us.lge.com/products/model/detail/tv\|audio\|video_lcd%20flat%20panel__20LS7D.jhtml ). What res are you trying to run at? The closer to the above, the better your image will be. It also scales down to standard def TV, which I think is around 480p, which is crap from your perspective of games / text / video. So you've got to push your graphics card to the 1366 x 768 setting, or some close scale to that.

Yes, my card automatically detects the native resolution and sets it to it. But what is interesting is that the manual said that I could use(around) 1920x1080 when using it as a monitor. And this TV is 720p.

godling · 06-February-08, 10:30 AM

Quote:

Originally Posted by Rjupiter


	Yes, my card automatically detects the native resolution and sets it to it. But what is interesting is that the manual said that I could use(around) 1920x1080 when using it as a monitor. And this TV is 720p.

I'm sure you already know that 1920x1080 is 1080p, not 720p. So your TV might be down-scaling the image ... not sure.

TCG_Modder · 06-February-08, 10:56 AM

from my personal exp of this.

LCDs that are actually TVs do not work that well as also computer monitors.
a friend had one and was using it also as a computer monitor, and had the same results.

everything defaulted to a lower res and looked blurry. we couldnt get a good picture from it and he eventually sold it.

Rjupiter · 06-February-08, 11:09 AM

Quote:

Originally Posted by godling


	I'm sure you already know that 1920x1080 is 1080p, not 720p. So your TV might be down-scaling the image ... not sure.

I am not saying I am using that resolution cause I tried it at that and the image was extremely over saturated and had a slight jitter/vibration to it. So it is at 1360 x 768.

I am going to try using another connection type and see if that helps.

Rjupiter · 06-February-08, 11:10 AM

Quote:

Originally Posted by TCG_Modder


	from my personal exp of this. LCDs that are actually TVs do not work that well as also computer monitors. a friend had one and was using it also as a computer monitor, and had the same results. everything defaulted to a lower res and looked blurry. we couldnt get a good picture from it and he eventually sold it.

yeah I was aware of that. Its just and extra that I wanted next to my monitor I already have. so if I can't get it to work, which I would like, its no big deal.

Rjupiter · 08-February-08, 02:40 AM

Well I tried the VGA cable and that didn't help, looks the same. Anyone have any other suggestions?

swimsfast99 · 08-February-08, 07:11 AM

I'm on the same page with TCG that from what i've seen and heard it normally does not work welling using the lcd TV as a monitor because of scaling and such. If the resolutions are lined up and the results aren't much better you might just have to go back to your old screen.

MRMOBEUS · 08-February-08, 07:31 AM

I'm gonna have to agree with the majority here...
I tried using a 15" lcd tv as a secondary monitor and the res just wasn't cuttin' it.
it was ok for watching movies on DivX etc but thats as far as its usefulness goes.

Rjupiter · 08-February-08, 10:36 AM

I was poking about the Nvidia forums/ support and some say that it is my card that is doing it, as they are trying to do the same thing. But I guess no crying about it, I tried my best. I'll just be happy when I get my Wacom Cintiq 21UX.

06-February-08, 06:52 AM		#1 (permalink)
Rjupiter Apex Advanced Techie	Using LCD TV as monitor? I recently bought a new bigger Samsung TV that replaced my LG TV. Well I decided, since the LG was only a couple of months old, that I would keep it and stick in on my computer and use it. I plugged it in to my computer with a HDMI to DVI cable and the pic shows up and the computer, win xp, caught it fine. The issue I am having is one of aesthetics and the pictures being off and blurry, the text is hard to read on the screen. I have tried different resolutions and setting, adjusting the refresh etc... but nothing seems to work. Is there something that I have just not tried that will get it looking sharp? Oh, I have a GeForce 8800GTX 768MB. Thanks & Cheers

06-February-08, 07:02 AM		#2 (permalink)
Jobistober P'Hoe'toshop Fanatic	Re: Using LCD TV as monitor? Is there an auto adjust on the TV? Sounds like the Phase and Clock settings in the TV aren't set right. Maybe try inputing straight to DVI or VGA on the TV instead of HDMI.

06-February-08, 10:56 AM		#9 (permalink)
TCG_Modder Apex Tech Fanatic	Re: Using LCD TV as monitor? from my personal exp of this. LCDs that are actually TVs do not work that well as also computer monitors. a friend had one and was using it also as a computer monitor, and had the same results. everything defaulted to a lower res and looked blurry. we couldnt get a good picture from it and he eventually sold it.

08-February-08, 02:40 AM		#12 (permalink)
Rjupiter Apex Advanced Techie	Re: Using LCD TV as monitor? Well I tried the VGA cable and that didn't help, looks the same. Anyone have any other suggestions?

08-February-08, 07:11 AM		#13 (permalink)
swimsfast99 Apex Master Tech Apprentice	Re: Using LCD TV as monitor? I'm on the same page with TCG that from what i've seen and heard it normally does not work welling using the lcd TV as a monitor because of scaling and such. If the resolutions are lined up and the results aren't much better you might just have to go back to your old screen.

08-February-08, 07:31 AM		#14 (permalink)
MRMOBEUS Voided Rev-Hoe-lutionary	Re: Using LCD TV as monitor? I'm gonna have to agree with the majority here... I tried using a 15" lcd tv as a secondary monitor and the res just wasn't cuttin' it. it was ok for watching movies on DivX etc but thats as far as its usefulness goes.

08-February-08, 10:36 AM		#15 (permalink)
Rjupiter Apex Advanced Techie	Re: Using LCD TV as monitor? I was poking about the Nvidia forums/ support and some say that it is my card that is doing it, as they are trying to do the same thing. But I guess no crying about it, I tried my best. I'll just be happy when I get my Wacom Cintiq 21UX.

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