jgriffin Posted February 12, 2007 Share Posted February 12, 2007 Hey guys, I'm trying to connect my new HTPC to my Panny TX47P500H teev (some DTV old timers might remember them). I'm using component out, and trying to sync at 1080i. Unfortunately the nVidia card doesn't want to do 50hz which the panny insists on. Even with Powerstrip, i can't get the timing right. I've read various posts around the web that claim that nVidia cards just don't do 50hz at 1080i over component, and they just output 60hz anyway. There are lots of posts i can find with people claiming they have it at 50hz, but the all seem to be people with TV's that work with both freq's, so i am starting to believe the claims that the cards just don't do 50hz. Has anyone here had any success with a 50hz only TV at 1080i ? I'll buy whatever card i need to as atm i have a useless HTPC. I don't feel like buying a new TV as there is nothing wrong with the current one, and i can't really afford a 47" or larger plasma or LCD. Link to comment Share on other sites More sharing options...
murrayt Posted February 12, 2007 Share Posted February 12, 2007 jgriffin I have a couple of 7600Gt Nvidia cards that seem to work fine with 50Hz selected. I can't comment n others but from what I have read the Nvidia has supported 50hz as an option for quite a while. ATI cards in my experience presented great problems. Link to comment Share on other sites More sharing options...
jgriffin Posted February 12, 2007 Author Share Posted February 12, 2007 THanks for the response. Without seeming to be rude, could i confirm though that a) you are using component out and that you are sure it is actually doing 1080i 50hz and isn't just claiming to thanks! Link to comment Share on other sites More sharing options...
Mr.Bitey Posted February 12, 2007 Share Posted February 12, 2007 Youve of course been over to avsforums and the massive powerstrip/custom timings thread? I know some model pana's need a special timing - my transcoder even has a switch just for panasonic's :-) Im using an old ati 9800pro with my toshiba (at 50hz).. unless your using an anchient nvidia card you should be ok - lots of people on here have used nvidia's at 50hz via component.. Which brand/model nvidia card are you using? - some cards (especially cheaper ones) cant output super-accurate timings and the pana's are particularly fussy. Now im not saying go buy an ATI - but if the nvidia isnt working - try another brand/species (get at least a 7600GT PCI Express (NOT agp). Cheers, Bitey Link to comment Share on other sites More sharing options...
jgriffin Posted February 13, 2007 Author Share Posted February 13, 2007 Youve of course been over to avsforums and the massive powerstrip/custom timings thread?I know some model pana's need a special timing - my transcoder even has a switch just for panasonic's :-) Im using an old ati 9800pro with my toshiba (at 50hz).. unless your using an anchient nvidia card you should be ok - lots of people on here have used nvidia's at 50hz via component.. Which brand/model nvidia card are you using? - some cards (especially cheaper ones) cant output super-accurate timings and the pana's are particularly fussy. Now im not saying go buy an ATI - but if the nvidia isnt working - try another brand/species (get at least a 7600GT PCI Express (NOT agp). Cheers, Bitey Thanks, yes i've seen the massive thread at AVSforum, but still no luck. I've actually using an ASUS M2NPV-VM, it's got an integrated nVidia 6150 video card which has component out and is PureVideo optimised blah blah which according to the guys over at XPMediacenter.com.au is a great integrated HTPC solution... except it seems most everyone uses DVI / VGA and stupid me thought the integrated component would work as well.... Link to comment Share on other sites More sharing options...
sold Posted February 13, 2007 Share Posted February 13, 2007 Have you got the latest drivers? 93.71 from memory. Link to comment Share on other sites More sharing options...
jgriffin Posted February 13, 2007 Author Share Posted February 13, 2007 Have you got the latest drivers? 93.71 from memory. Naturally. And i've tried MCE2005 and Vista. Link to comment Share on other sites More sharing options...
AndrewWilliams Posted February 13, 2007 Share Posted February 13, 2007 My old TV only had component and I could never get 50Hz working properly with ATI or nVidia cards. My new TV has HDMI and my nVidia card detects it perfectly and gives my the option of 50 or 60Hz for every resolution. Link to comment Share on other sites More sharing options...
murrayt Posted February 13, 2007 Share Posted February 13, 2007 OK No I am not using component out. The connection is DVI That may be relevant to your concerns. The monitor (Samsung 193T) does however report that vertical refresh is presented as 50 Hz Link to comment Share on other sites More sharing options...
Mr.Bitey Posted February 13, 2007 Share Posted February 13, 2007 I'd just disable the onboard, swallow the lumps and buy a 7600GT PCI-Express (or higher). Onboard = BAD in my experience (that goes for anything onboard - network/audio/video :-) Ive gone onboard once - never again. Basic board for me next time, and i'll add the components that are known to work :-) PS: I have a vague recollection of some nvidia drivers not working properly under MCE.. Have you tried XP?? Cheers, Bitey Link to comment Share on other sites More sharing options...
DMK Posted February 14, 2007 Share Posted February 14, 2007 Hmmm, this all sounds vaguely familiar I also have an ASUS M2NPV-VM using XP Pro and could never get it to behave with the onboard video over component to my Sony KVHR32M31 even using Purevideo. SD would be ok, but HD would stutter badly. So I bit the bullet and got a 7600GT and HD was instantly a lot better. But I still had an annoying microstutter that was very noticeable during sports telecasts with fast pans. I put this down to the fact that whenever you adjust the desktop for overscan, the refresh rate is forced to 60Hz and I was watching 50Hz content. I spent a whole weekend trying different custom settings within the Nvidia control panel and then tried powerstrip as well. I could get both of them to report they were outputting 50Hz (with overscan), but my eyes were telling me that nothing had changed. At the same time I was playing around in the Service menu of my TV and noticed it was reporting the Refresh Rate of the input signal. Using ABCHD from my STB as a test, it reported 720p @ 50Hz correctly. I then changed inputs to my pc which was supposedly also doing 720p/50Hz but the service menu reported 60Hz. Seems like the Nvidia card is actually sending a 60Hz signal over component, even when the software says its 50Hz Link to comment Share on other sites More sharing options...
jgriffin Posted February 19, 2007 Author Share Posted February 19, 2007 Hmmm, this all sounds vaguely familiar I also have an ASUS M2NPV-VM using XP Pro and could never get it to behave with the onboard video over component to my Sony KVHR32M31 even using Purevideo. SD would be ok, but HD would stutter badly.So I bit the bullet and got a 7600GT and HD was instantly a lot better. But I still had an annoying microstutter that was very noticeable during sports telecasts with fast pans. I put this down to the fact that whenever you adjust the desktop for overscan, the refresh rate is forced to 60Hz and I was watching 50Hz content. I spent a whole weekend trying different custom settings within the Nvidia control panel and then tried powerstrip as well. I could get both of them to report they were outputting 50Hz (with overscan), but my eyes were telling me that nothing had changed. At the same time I was playing around in the Service menu of my TV and noticed it was reporting the Refresh Rate of the input signal. Using ABCHD from my STB as a test, it reported 720p @ 50Hz correctly. I then changed inputs to my pc which was supposedly also doing 720p/50Hz but the service menu reported 60Hz. Seems like the Nvidia card is actually sending a 60Hz signal over component, even when the software says its 50Hz Thanks DMK, it seems i am not imaging it afterall! Don't suppose anyone has a Transcoder for sale? :-) http://www.crescendo-systems.com/transcoder.html Link to comment Share on other sites More sharing options...
ocujos Posted February 20, 2007 Share Posted February 20, 2007 I don't own NVIDIA cards but I had a similar problem when I was using a Radeon 9550 (using DVI out). If I set the desktop refresh to 50Hz, the projector would report correctly 50Hz. However, when MCE application was started, the desktop refresh immediately jumped to 60Hz! I fixed this by using Powerstrip and forcing 50Hz. This locked the 50Hz vertical refresh even when MCE was started. I use an X1600 card and no longer use Powerstrip. MCE runs at 50Hz all the time. This link in xpmediacentre forums may help you. Read the post #28. Link to comment Share on other sites More sharing options...
jgriffin Posted February 20, 2007 Author Share Posted February 20, 2007 I don't own NVIDIA cards but I had a similar problem when I was using a Radeon 9550 (using DVI out).If I set the desktop refresh to 50Hz, the projector would report correctly 50Hz. However, when MCE application was started, the desktop refresh immediately jumped to 60Hz! I fixed this by using Powerstrip and forcing 50Hz. This locked the 50Hz vertical refresh even when MCE was started. I use an X1600 card and no longer use Powerstrip. MCE runs at 50Hz all the time. This link in xpmediacentre forums may help you. Read the post #28. Yeah the MediaCenter 60hz thing is an issue, but i don't even get that far. Setting 50hz in powerstrip has no effect. Link to comment Share on other sites More sharing options...
DMK Posted February 20, 2007 Share Posted February 20, 2007 Same here, I've also tried Powerstrip forced to 50Hz, and everything is reporting 50Hz through the software on XP, but the actual signal the TV receives is 60Hz. The component out has to go through the TV-out part of the graphics card so maybe thats where the limitation is...? I'm wondering if I could try using a RGB - RGBHV cable as my Sony tv accepts this. That way it will get around having to go through the Component TV-Out and would hopefully give me a genuine 50Hz.... Must investigate further. I'm sure there were some posts on this when the TV first came out prior to Component out being widely available on graphics cards. All this is great fun isn't it? Link to comment Share on other sites More sharing options...
jgriffin Posted February 20, 2007 Author Share Posted February 20, 2007 Same here, I've also tried Powerstrip forced to 50Hz, and everything is reporting 50Hz through the software on XP, but the actual signal the TV receives is 60Hz. The component out has to go through the TV-out part of the graphics card so maybe thats where the limitation is...?I'm wondering if I could try using a RGB - RGBHV cable as my Sony tv accepts this. That way it will get around having to go through the Component TV-Out and would hopefully give me a genuine 50Hz.... Must investigate further. I'm sure there were some posts on this when the TV first came out prior to Component out being widely available on graphics cards. All this is great fun isn't it? Yes that should give you a true 50hz. Lots of people do this with the transcoder i am trying to hunt down, and it works fine. It appears to be a limitation of the component out part of the nvidia cards. Link to comment Share on other sites More sharing options...
madmax Posted February 20, 2007 Share Posted February 20, 2007 This link in xpmediacentre forums may help you. Read the post #28. A 50Hz reg hack for MCE......sweet, downloaded for future use! Link to comment Share on other sites More sharing options...
AndrewWilliams Posted February 22, 2007 Share Posted February 22, 2007 It's not really a 50Hz hack - it's more of a "Don't switch to 60Hz" hack. Link to comment Share on other sites More sharing options...
Recommended Posts