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derik736
Joined: 26 Mar 2011
Posts: 28
Location: POland
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| Posted: Sat Sep 24, 2011 10:28 am Post subject: Sony G70 input board question |
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Hi,
i have a sony g70 with moome dvi card installed (the older generation) and i canīt properly adjust the convergance on it. Which is why i wanted to use my good old hdfury and connect it to the second BNC input card. My problem is, the second card seems to be disconnected. I try to choose the input but on menu shows it isnīt available. Any idea how can i fix it??
Thanks
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jeffslife
Joined: 17 Apr 2010
Posts: 4190
Location: ohio usa
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| Posted: Tue Sep 27, 2011 11:41 pm Post subject: |
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Have you tried taking the moome out first ?
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derik736
Joined: 26 Mar 2011
Posts: 28
Location: POland
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| Posted: Tue Oct 25, 2011 7:30 pm Post subject: |
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Not yet...should i???
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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: Tue Oct 25, 2011 7:43 pm Post subject: |
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It sounds like you have two issues. THe ability to converge should not be dependent on an input board, but I would take the Moome board out first, and see if you can properly converge the set with an RGB input. If not, the convergence board is most likely bad.
The lack of input B in the menus is most likely a menu setting, and you should be able to re-enable it within the service menu somewhere.
I can repair the convergence board for you if you want.
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derik736
Joined: 26 Mar 2011
Posts: 28
Location: POland
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| Posted: Wed Oct 26, 2011 10:24 am Post subject: |
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Hi Curt,
i took the moome card out (which is version 1.72 from year 2005 with dvi input) and i could set the convergance much better after that, at least without any input at all. Still canīt activate the second RGB input, should i just switch both cards??? Canīt find any option to activate the second input in menu...
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derik736
Joined: 26 Mar 2011
Posts: 28
Location: POland
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| Posted: Thu Oct 27, 2011 11:44 am Post subject: |
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now iīm really frustrated, i canīt find any possibility to activate the INPUT A. Any ideas??? There are some pins (C35,C36 and C37) on the input board which can be switched. Are these responsible for activating of the INPUT A board????
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derik736
Joined: 26 Mar 2011
Posts: 28
Location: POland
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| Posted: Thu Oct 27, 2011 4:18 pm Post subject: |
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probelm solved 
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HaydnG90
Joined: 22 May 2006
Posts: 1356
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| Posted: Thu Oct 27, 2011 4:40 pm Post subject: |
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Might be helpful to others in the future to say what you did to fix the problem?
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jeffslife
Joined: 17 Apr 2010
Posts: 4190
Location: ohio usa
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| Posted: Thu Oct 27, 2011 9:59 pm Post subject: |
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I am curious myself.
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derik736
Joined: 26 Mar 2011
Posts: 28
Location: POland
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| Posted: Sat Oct 29, 2011 7:58 am Post subject: |
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Well it was actually very easy problem to solve. I took the loomed card out first but that didn't help. than I went to service mode and into "set settings" and than the option "5bnc mode" must be switched to "Off". otherwise only the input B is activated...no idea why 
anyway I think my moome card must be broken cause I can set my g70 much better via hdfury. Now the picture quality improved a lot and for the only (and hopefully last) problem I have is defocused blue tube that I am not able to set properly. I only tried by " MG FOCUS" but somehow the entire right part of the screen is foggy..
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AFryia
Joined: 09 Mar 2006
Posts: 965
Location: S.E. Michigan VPH-G70Q
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| Posted: Sat Oct 29, 2011 2:41 pm Post subject: |
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| derik736 wrote: | | I have is defocused blue tube that I am not able to set properly. I only tried by " MG FOCUS" but somehow the entire right part of the screen is foggy.. |
Scheimpflug, aka lens flapping perhaps?
Use the phosphor grain technique for optical focus and you will know for sure if your problem is electronic or optical.
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derik736
Joined: 26 Mar 2011
Posts: 28
Location: POland
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| Posted: Sat Oct 29, 2011 5:47 pm Post subject: |
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Can you refresh my memory on "phosphor grain technique for optical focus"?? Scheimpflug are those two screws above each lens right??I tried it too but it didnīt help...iīll shoot some pictures tomorrow so you can see what i mean. But i love the picture already  i checked some digital pjs last days, i saw the sony hw15 and optoma hd67. Pretty good for HD material but completely unacceptable with SD stuff. With G70 i get REALLY AMAZING AND BREATHTAKING quality in any type of medium, i even checked some 700MB divx files and guess what - i couldnīt really complain thatīs the best part i love by G70. Bluray movies from my samsung look to die for.
I hope i will loose the blue tube problem somehow....
One more question: my tubes are about 3700 hours old, so i will have to get new ones in one or two years or so. When can i get my tube refurbished????
Cheers
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AFryia
Joined: 09 Mar 2006
Posts: 965
Location: S.E. Michigan VPH-G70Q
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| Posted: Tue Nov 01, 2011 10:41 pm Post subject: |
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| derik736 wrote: | | Scheimpflug are those two screws above each lens right?? |
If you mean the small hex heads with a V and H raised letter next to it on the aluminum chassis then yes. On the outer lens housing no.
| derik736 wrote: | | Can you refresh my memory on "phosphor grain technique for optical focus"?? |
An Interpretation of Guy Kuo's Focus Document Originally Writen by Guy Kuo and now specialized for G70
Modified by Brian Hampton wrote: |
Phosphor Grain Optical Focus Technique for when the Electron Beam Has not been Focused Yet
Most people have difficulty deciding whether optical, beam or both kinds of focus problems are present, particularly if they have not already achieved good beam focus. Here is a trick for setting good optical focus without being confused by beam focus. You must have a good pair of binoculars which focus at a short distance to use this technique.
The phosphor surface of a CRT has an inherent grain pattern. Because this grain is visible and is exactly at the plane of light generation, one can use the grain to set optical focus independent of beam focus. A small piece of 3M easy release blue masking tape aids in keeping your eyes correctly focused on screen. Display a bright window pattern and intentionally defocus the electron beam to make the scan lines disappear (do this by reducing "EM Focus All" below the just point). Adjust center optical focus while viewing the screen through binoculars. When optical focus is correct, the inherent grain pattern of the phosphor surface suddenly snaps into view. This is nearly impossible to see with naked eye, but binoculars make it readily evident.
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This is the only way to lens flap and optical focus IMO.
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