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tanwn1
Joined: 08 Dec 2014
Posts: 60
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| Posted: Sat Oct 02, 2021 3:39 am Post subject: Barco cine9 loses deflection |
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After a few minutes, the picture loses deflection and does not respond to remote. Swapped horizontal n smps but stil same, could it b splitter or quad? Thanks
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Hulio
Joined: 15 Apr 2006
Posts: 494
Location: Belgium
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| Posted: Sat Oct 02, 2021 11:50 am Post subject: |
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Two things you have to check, in order to bring you closer to the issue:
1. The status of the diagnostic leds on the second SMPS/G2 board
2. Whether or not the red led on the EHT board is lit. If yes, one of those could be the culprit:
-bad quad
-bad EHT
-bad splitter
-a shorted tube
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tanwn1
Joined: 08 Dec 2014
Posts: 60
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| Posted: Sat Oct 02, 2021 12:00 pm Post subject: |
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Theres no red led on g2 board or eht. Could it b some board on controller board?
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Hulio
Joined: 15 Apr 2006
Posts: 494
Location: Belgium
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| Posted: Sat Oct 02, 2021 12:58 pm Post subject: |
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Ok, this mean no scan fail.
Are all green leds on G2 board on ?
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tanwn1
Joined: 08 Dec 2014
Posts: 60
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| Posted: Sat Oct 02, 2021 1:34 pm Post subject: |
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Yes all greens leds on. What happen was after a few minutes, the picture will shrink back horizontally and picture dimmed n remote wil not communicate with projector n has to b turned off from main switch. Changed horizontsl board but issue remains.
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tanwn1
Joined: 08 Dec 2014
Posts: 60
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| Posted: Sat Oct 02, 2021 1:36 pm Post subject: |
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Before this happen, i had to raise blue gain alot to compensate. Wil a shorted blue tube stil light up picture?
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Hulio
Joined: 15 Apr 2006
Posts: 494
Location: Belgium
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| Posted: Sat Oct 02, 2021 3:29 pm Post subject: |
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No, a shorted tube will cut off the HV to all three tubes and the red EHT led will be on.
Suddenly changes in focus and horizontal dimensions of the picture, are pointing in the splitter direction.
Try to change that first, if you have a spare.
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