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atomiccow
Joined: 11 Jul 2009
Posts: 89
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| Posted: Mon Nov 30, 2009 9:02 am Post subject: G70 Input "A" not being detected |
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I retired my Sony G70 til I could sell my 1271. I was rehooking it up tonight after a 2 month hiatus but it is now not detecting any input signal.
I am using an "Inline" VGA to RGB VSynch connector to my PC which I am running at 1080i. (This is a 12v powered unit that looks like a cigarette pack with 4 BNC females on top and an vga lead coming out the bottom.)
The output from the computer video card is a DVI connector adapted down to VGA.
Plugging the BIN cables from this "Inline" adaptor to my Sony 1271 works fine. Transfering them to the G70 I show no input from INPUT "A". This is baffling because the cables worked before. I am even transfering them directly from my "already on" and projecting 1271 one at a time to the G70 to prove to myself the cables are working.
My settings for the projector are "GBR HD" which is what I think they were when I got it working before. The computer is outputting a 1080i image. I have checked the input card to make sure it is seated correctly. The paired colored wires on it that lead to the tubes are fine.
The G70 is projecting a beautiful image but its all just internal grids and menus. I am having a hard time accepting the Input board could be broken/faulty. I have duplicates of almost every other G70 board but I don't seem to have another input board to test it out. I am hoping its just some menu setting I have missed.
Suggestions welcome.
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Curt Palme
CRT Tech
Joined: 08 Mar 2006
Posts: 24396
Location: Langley, BC
TV/Projector: All of them!
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| Posted: Mon Nov 30, 2009 3:02 pm Post subject: |
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THe input should be set to RGB. I think you have it set for component, which is why you're not seeing anything. Go into the service mode and select 'RGB' in one of the menus. Happened to me at a customer's house the other day. I panicked.. for a second. 
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atomiccow
Joined: 11 Jul 2009
Posts: 89
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| Posted: Mon Nov 30, 2009 5:29 pm Post subject: |
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| Curt Palme wrote: | | THe input should be set to RGB. I think you have it set for component, which is why you're not seeing anything. Go into the service mode and select 'RGB' in one of the menus. Happened to me at a customer's house the other day. I panicked.. for a second. |
I'll go try it right away.
When you were here I had the same problem and eventually solved it.
BRB. Hope it works!
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atomiccow
Joined: 11 Jul 2009
Posts: 89
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| Posted: Mon Nov 30, 2009 6:42 pm Post subject: |
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Okay that didn't work at first. I was set to that GBR HD TV and I set it to RGB. But..
Uph up up.... Hold on.
I took out the "B" card (input card) and I think the top daughter card was dislodged. I pushed it back in.
At first a picture didn't pop on but this time setting it to RGB did work. So at least I have a picture.
Then the one question I have then is I am almost positive that I used to have it set for GBR HD TV and it worked. Is that nuts? Supporting that theory, that's where it was set when I turned it on. And When its set to GBR HD TV its super bright and sharp and tightly aligned. Set to RGB it is horribly misaligned. It might just be the misalignment but it also looks a third less bright and sharp. I am also hitting limits with skew trying to align it.
I just checked my desktop settings and the image is set to 1920 X 1080 i rez. I would think the projector would be responding favorably to GBR HD TV, but what do I know.
I am relieved at least I am getting a picture. But would like to get the High def picture obviously.
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atomiccow
Joined: 11 Jul 2009
Posts: 89
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| Posted: Mon Nov 30, 2009 7:58 pm Post subject: |
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As usual I am figuring out a lot as I go along. I was getting horrible grid distortions in RGB mode...the kind that would be impossible to fix like red bowed to the left really high and straight on the other end. Resetting to factory defaults one at a time seems to be getting things straight. But isn't there a way to reset everything to factory defaults. It seems I have to reset every setting at every color to get things back to normal.
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ecrabb
Forum Moderator
Joined: 13 Mar 2006
Posts: 15909
Location: Utah
TV/Projector: JVC RS40, Epson 5010
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| Posted: Mon Nov 30, 2009 8:02 pm Post subject: |
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You must be running a resolution that's never been set up before. If so, you'll have to do full geometry and convergence from scratch. Reset everything to mid-point and start from scratch. Do the setup first with no input at all, save that setup to all memory locations, then fire up your external signal (computer), touch up/tweak, then save the adjustments to only that memory location.
SC
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atomiccow
Joined: 11 Jul 2009
Posts: 89
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| Posted: Mon Nov 30, 2009 11:06 pm Post subject: |
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| ecrabb wrote: | You must be running a resolution that's never been set up before. If so, you'll have to do full geometry and convergence from scratch. Reset everything to mid-point and start from scratch. Do the setup first with no input at all, save that setup to all memory locations, then fire up your external signal (computer), touch up/tweak, then save the adjustments to only that memory location.
SC |
You are correct sir, Mister ECrabb! That is exactly what I had to do although I did not save the setup yet.
Looks awesome. Unfortunately it looks a little too good. One of the things I liked about the 1270 is there wasn't really a sense I was watching a video projector. Having the softer picture the scanlines were essentially invisible. Now they are pretty clearly video scanlines in light scenes.
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ecrabb
Forum Moderator
Joined: 13 Mar 2006
Posts: 15909
Location: Utah
TV/Projector: JVC RS40, Epson 5010
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| Posted: Tue Dec 01, 2009 12:32 am Post subject: |
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My G70 is way too sharp for 1080i too, so I run at 1080p. That gives the best of both worlds.... It displays a great deal more resolution than a 12xx, but it's not sharp enough to show scan lines at 1080i. It definitely costs some sharpness, but I like the smooth scan-line free image... And I sit very close - at <1.2 screen widths.
Try running 1080p and see if it doesn't get you back the "film-like" image you were used to (but more like 35mm film as opposed 8mm film).
SC
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atomiccow
Joined: 11 Jul 2009
Posts: 89
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| Posted: Tue Dec 01, 2009 6:17 pm Post subject: |
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| ecrabb wrote: | My G70 is way too sharp for 1080i too, so I run at 1080p. That gives the best of both worlds.... It displays a great deal more resolution than a 12xx, but it's not sharp enough to show scan lines at 1080i. It definitely costs some sharpness, but I like the smooth scan-line free image... And I sit very close - at <1.2 screen widths.
Try running 1080p and see if it doesn't get you back the "film-like" image you were used to (but more like 35mm film as opposed 8mm film).
SC |
I may try that. I ran 1080p at 24fps yesterday which made the set go whacky. I'll try a higher frequency.
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ecrabb
Forum Moderator
Joined: 13 Mar 2006
Posts: 15909
Location: Utah
TV/Projector: JVC RS40, Epson 5010
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| Posted: Tue Dec 01, 2009 6:19 pm Post subject: |
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Yeah, you'll need to run at least 48. I run 1080p/60 because I don't have a scaler or decent HTPC... So, it's just the native output from my source(s) and the basic scaler in my prepro.
SC
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