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Fühlerhardy
Joined: 04 Oct 2020
Posts: 6
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| Posted: Tue Apr 18, 2023 6:57 pm Post subject: G2 settings on BARCO Graphics 801s |
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Hi everyone,
I don't know if I've asked this question here before. I have a problem with my Barco Graphics 801s. Unfortunately, the previous owner turned the potentiometers for the G2 settings.
Now the settings do not work as stated on the projector. The LEDs for the output amplifiers should actually go out when the setting is correct...but they don't. I've tried it in various ways, and I've also been careful when turning the pots. I also downloaded the instructions here, but there is very little to nothing to be found there. What am I doing wrong? Thanks in advance for valuable tips.
Many greetings...
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kal
Forum Administrator
Joined: 06 Mar 2006
Posts: 18114
Location: Ottawa, Canada
TV/Projector: JVC DLA-NZ7
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| Posted: Tue Apr 18, 2023 7:21 pm Post subject: |
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IIRC you need to turn them VERY slowly. Though it's been probably 20 years since I had my hand in one so best to poke/search around the forum here. I think in some cases they don't go out either (?)
I'm moving to the CRT projector section as this is more about the proper setup of a 801s and not really "calibration".
Kal
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Fühlerhardy
Joined: 04 Oct 2020
Posts: 6
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| Posted: Thu Apr 20, 2023 4:32 pm Post subject: |
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Hey Kal, this is crazy. I followed your advice and lo and behold; it actually worked...I just managed to do it with the necessary delicacy. Thanks for this valuable hint.
Hardy
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kal
Forum Administrator
Joined: 06 Mar 2006
Posts: 18114
Location: Ottawa, Canada
TV/Projector: JVC DLA-NZ7
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km987654
Joined: 25 Jul 2007
Posts: 2874
Location: Australia
TV/Projector: Barco BG809s
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| Posted: Thu Apr 27, 2023 11:00 pm Post subject: |
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| Fühlerhardy wrote: | Hey Kal, this is crazy. I followed your advice and lo and behold; it actually worked...I just managed to do it with the necessary delicacy. Thanks for this valuable hint.
Hardy |
Great that you can now make this adjustment. Keep in mind though that even when you get those LEDs to go out the adjustment may not be correct. It may be good enough but if you want it right it's probably not going to be.
The issue is age.
There are alternate ways to get a better adjustment. Search the forum as there have been many discussions over the years.
On my projector I have replaced many components over time but still that adjustment using the LEDs is not correct.
Have fun.
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tschaeikaei
Joined: 08 Apr 2013
Posts: 490
Location: Germany/Saarland
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| Posted: Tue Jul 11, 2023 11:33 pm Post subject: |
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I had a graphics 801s for a few years. Things about focus: ignore the LEDs, use sunglasses and look into the tubes. Contrast at about your normal viewing settings (i used 50 to 60) and white text on black background. It works even better if you unscrew the lenses and look directly onto the tubeface.
Don't expect too much of the 801s's focussing ability, it is ES focus after all. It will get blurry if the picture get's bright.
You can setup the focus with a black text on white background, but then it will defocus if the picture gets dark.
I think in very bright movie scenes, loss of focus will be more acceptable than in mostly dark scenes.
Best regards from Germany, Julian
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