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Corleone88
Joined: 09 Dec 2006
Posts: 474
Location: France
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| Posted: Sun Apr 07, 2024 6:44 pm Post subject: Barco 1209s convergence issues |
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Hello,
Yesterday, I started my BG 1209s and all the convergences were off. I tried to adjust them but only the middle square works. Same issue with the geometry almost nothing can be adjusted through the remote control. Obviously, at least one board has to be changed or reset, but which one? Thanks for your help.
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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 Apr 08, 2024 12:07 am Post subject: |
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Check the fuses on the power supply board. From my memory, the outer zones are fed by two power supplies on the SMPS. If one fuse fails, then only the middle square will work.
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Corleone88
Joined: 09 Dec 2006
Posts: 474
Location: France
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| Posted: Thu Apr 11, 2024 7:25 pm Post subject: |
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Hi Curt,
Thanks for the quick reply. I managed to get another SMPS board, but unfortunaltely, the issue is still there. Any other ideas?
Thanks
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km987654
Joined: 25 Jul 2007
Posts: 2874
Location: Australia
TV/Projector: Barco BG809s
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| Posted: Thu Apr 11, 2024 10:38 pm Post subject: |
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My 2 cents would be its the Convergence driver.
If by chance thats not it then swap out the convergence output (amplifier) board.
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bluemoonhu
Joined: 16 Feb 2021
Posts: 259
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| Posted: Fri Apr 12, 2024 3:51 am Post subject: |
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Although I don't have 1209S, if their design structure is the same, I believe there is a problem with the lowest level convergence board of the machine, either the resistance is burnt out or there is corrosion on the circuit board. Please check it
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Corleone88
Joined: 09 Dec 2006
Posts: 474
Location: France
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| Posted: Fri Apr 12, 2024 6:31 pm Post subject: |
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| km987654 wrote: | My 2 cents would be its the Convergence driver.
If by chance thats not it then swap out the convergence output (amplifier) board. |
The geometry and the convergence are completely off on the right side. The middle part is ok. The left side is a bit off.
I know the convergence driver board but what is the convergence output board? Is it the Focus H shift board or Vertical board?
Thanks
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km987654
Joined: 25 Jul 2007
Posts: 2874
Location: Australia
TV/Projector: Barco BG809s
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| Posted: Fri Apr 12, 2024 11:13 pm Post subject: |
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| Corleone88 wrote: | | km987654 wrote: | My 2 cents would be its the Convergence driver.
If by chance thats not it then swap out the convergence output (amplifier) board. |
The geometry and the convergence are completely off on the right side. The middle part is ok. The left side is a bit off.
I know the convergence driver board but what is the convergence output board? Is it the Focus H shift board or Vertical board?
Thanks |
If you know the driver board then the output board is directly behind it in the convergence tray.
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Corleone88
Joined: 09 Dec 2006
Posts: 474
Location: France
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| Posted: Sun Apr 14, 2024 4:47 pm Post subject: |
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Hi,
It has been a very long time since I pulled out a convergence tray and it was on a 808. If I remember correctly I need to remove some boards to access the handles. Can someone remember which ones, please? Thanks
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km987654
Joined: 25 Jul 2007
Posts: 2874
Location: Australia
TV/Projector: Barco BG809s
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| Posted: Sun Apr 14, 2024 8:29 pm Post subject: |
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There nothing to remove. The handles for the tray are on the front of the projector. The drawer slides out the front. The tray has the driver, output and astig boards.
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Corleone88
Joined: 09 Dec 2006
Posts: 474
Location: France
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| Posted: Tue Apr 16, 2024 10:41 am Post subject: |
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I plugged my spare convergence tray, but now I have a message saying that I have a "short-cut BUS I2C".
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Corleone88
Joined: 09 Dec 2006
Posts: 474
Location: France
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| Posted: Fri Apr 19, 2024 4:18 pm Post subject: |
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| km987654 wrote: | My 2 cents would be its the Convergence driver.
If by chance thats not it then swap out the convergence output (amplifier) board. |
I changed the convergence output board and the problem is now fixed: I can adjust geometry and converges again! Thanks!
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