CurtPalme.com Home Theater Forum

kevin_k · Joined: 25 Oct 2007 Posts: 67

I just got my new moome card this week so I was working on my grey scale this past weekend. The gamma on my high end is way too hot and my drive controls are zeroed out.

What would cause this? I recently scoped it, so did I miss something?

Also

I just installed a hush box and I think the projector is running too hot. I am getting banding on the left edge of the screen and also along some vertical lines in the image. It seems fine when I initially turn it on, but it develops after the warm up period. It seem most pronounced in the red tube, but also a little in the blue tube. Correct me if I'm wrong, but I don't think it's raster ringing because all the tubes are centered equally and I don't get banding on the green.

I don't want to give up the hush box because it sounds great with it on so can I point a fan at something. Any advice would be appreciated.

thanks Kevin

MikeEby · Joined: 24 Jun 2007 Posts: 5237 Location: Osceola, Indiana

Kevin,
What is your source and what resolution are you running?

Mike

kevin_k · Joined: 25 Oct 2007 Posts: 67

Sorry, I wasn't thinking it was source related.

1080i96 via htpc with the latest nvidia driver and powerstrip.

I just switched to Vista and I don't remember seeing banding in XP, but I could have missed it. I am getting what I think are interlace artifacts in the mymovies app, but I think it's unrelated to the banding. I've thrown a lot in the room at once so unfortunately now I'm backtracking.

MikeEby · Joined: 24 Jun 2007 Posts: 5237 Location: Osceola, Indiana

Interesting…I spend a lot of time over the weekend attempting to make custom resolutions work with Vista & NVidia 9800GT with zero luck. I found I’m not the only one having issues, see this thread.

http://forums.nvidia.com/index.php?showtopic=87480

Press the info key on the remote and see what frequency the projector is reporting it’s the fh and fv values. My guess is it may be running 1080p60Hz or even worse 1080p@96Hz that will indeed cause the projector to heat up. That is all I could get out the current driver with Powerstrip.

ATI is not flawless either, you have to fiddle around with CCC to get them to work too, which I have not been able to do with much success.

Mike

benareeno · Joined: 22 Mar 2006 Posts: 1614 Location: ottawa, canada

Did you do the XG white balance setup procedure? Including blanking etc?

kevin_k · Joined: 25 Oct 2007 Posts: 67

Mike, I've got 60hv and 96fv and the polarity is +,+. Shouldn't it be -,- for interlaced?

I'll read that link thanks.

Benareeno, yes G2's have been gone over throughly, thanks

kevin_k · Joined: 25 Oct 2007 Posts: 67

Mike, Did you try any custom resolutions in the Nvidia control panel.

MikeEby · Joined: 24 Jun 2007 Posts: 5237 Location: Osceola, Indiana

kevin_k · Joined: 25 Oct 2007 Posts: 67

OK, thanks..........I remember reading a post were Mark said that 1080i96 should run at 48. When I looked in powerstrips timings box it says 47, so I assumed it was outputting 48.

That being said, it's sort of the reason I was looking for to go back to XP on this box. I've had other troubles with it, the Nvidia Chipset driver has given me grief and mymovies (maybe because of powerstrip) gives me BSOD once and a while.

So how can you tell if the projector is sync with progressive or interlaced?

Mark_A_W · Posted: Mon Feb 02, 2009 10:36 pm Post subject:

For 1080i 96hz, you set Powerstrip to 47.952hz, and the projector will report 95.9hz.

+ or - sync doesn't seem to make any difference with an XG (or Xtra).

What drive controls exactly are zero'd out? There are no drive controls that you should be fiddling with, only Kelvin W and Kelvin B.

The lines on the LH edge are raster ringing. More back porch can help with that, but at 1920x1080 resolutions it's hard to avoid some.

Vertical lines in the image usually mean the back raster is showing and the BLKG pots (pedestal level pots really) need adjusting - you need a scope to do this properly. This really means a full mech white balance...

Any projector in a hushbox needs a thermometer! Although from your description I think it's unrelated.

Mark

kevin_k · Joined: 25 Oct 2007 Posts: 67

Mark, I'm trying to do a greyscale with my new moome card. So I'm in the reference menu adjusting drive control and bright bias. I recently scoped it as best as possible with trying to interpret the manual.

So my 80+ ire windows won't go below 1.8 or so gamma because the drive control has bottomed out. The rest of the gamma is falling in line so I'm trying to figure out how to correct it.

The vertical lines I spoke of are not the issue, but there is the same horizontal lines next to them similair to the horizontal lines on the LH. So is that raster ringing too and would raster ringing show up in all 3 tubes? I only see it in R and B

Mark_A_W · Posted: Tue Feb 03, 2009 5:22 am Post subject:

Well the can of worms is open now.

You need the service manual and a scope now. You HAVE to get the BLKG (Pedestal) pots right with a scope.

And yes the Moome cars are TOO HOT. I tried a Moome DVI card and a Moome ISS switcher HDMI card...and went back to RGBHV.

kevin_k · Joined: 25 Oct 2007 Posts: 67

Mike,
Just an FYI. I put XP Media Center into that box and the picture runs a lot cooler. Without touching anything after I installed XP I ran grayscale and my gamma was almost flat and in line whereas with Vista my low end was up in the 3 and high end around 1.8.

XP flattened the gamma out and darkened the image. I don't know if it's Vista or something else, but I was pleasantly surprised.

MikeEby · Joined: 24 Jun 2007 Posts: 5237 Location: Osceola, Indiana

I think the Nvidia driver for Vista is really screwed right now. I put my ATI card back in and all is well also, I'm running Vista SP2 AKA Windows 7.

Mike

kevin_k · Joined: 25 Oct 2007 Posts: 67

Are you running a front end at all. I downloaded the win 7 beta and I was going to put it in my kids machine because I wasn't sure if it was stable enough for my HTPC. I've always been a Nvidia guy. Do you think Win 7 is worth a look if I buy and ATI card?

Right now I'm pissed at Microsoft, I have media center on a computer I use as a TV\itunes center in the kitchen and I was going put that license on the HTPC, but they are saying the license is none transferable so they are trying to make me buy another license for it.

MikeEby · Joined: 24 Jun 2007 Posts: 5237 Location: Osceola, Indiana

Very stable except for the Nvidia driver but it’s flakey for even Vista as you know. For W7 I used the latest Vista driver for my ATI card. The reason I call it Vista SP2 is because it just seems like a slightly updated Vista there are some new features. I would not be surprised if it's M$ plan to move people away from XP by giving W7 beta away get them hook then have it expire forcing you to buy W7, not a bad plan when you think about it.

Mike