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opv
Joined: 18 May 2010
Posts: 202
Location: Emek Hefer,Israel
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| Posted: Thu Aug 24, 2017 6:36 am Post subject: BG1209s issue with convergence |
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Hi,
I found a problem with one of the boards in the convergence tray.
When I use this tray, I get a distortion in the bottom of the picture, see attached.
Can you guys identify which one of the 3 cards in the tray is causing this problem?
Thanks,
Or
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redfox001
Joined: 16 Mar 2009
Posts: 2257
Location: The Netherlands
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| Posted: Thu Aug 24, 2017 12:35 pm Post subject: |
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I had a problem like that on my 909 and it was a little cap on the convergence board. I checked the solder connections and repaired it.
_________________
701s->runco933->8500ultra->cinemax->9500mp->919 splitpack + cinemax
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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: Thu Aug 24, 2017 2:05 pm Post subject: |
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I have lots of spare boards, my guess is that it is the convergence output board. Unplug the connectors between the output board and the smaller driver board to see if the problem goes away.
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opv
Joined: 18 May 2010
Posts: 202
Location: Emek Hefer,Israel
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| Posted: Thu Aug 31, 2017 12:31 pm Post subject: |
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We unplugged the cables like Curt suggested.
The picture looks better (see attached).
Does this mean the output board is bad?
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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: Thu Aug 31, 2017 1:46 pm Post subject: |
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It can be either the driver board, sending out a bad signal to the output board, or a bad output board, reacting to a normal input signal. No way to tell except to change out the boards I'm afraid.
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opv
Joined: 18 May 2010
Posts: 202
Location: Emek Hefer,Israel
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| Posted: Thu Aug 31, 2017 2:13 pm Post subject: |
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OK, understood.
Curt, please check PM.
Thanks
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