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km987654
Joined: 25 Jul 2007
Posts: 2874
Location: Australia
TV/Projector: Barco BG809s
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| Posted: Sun Feb 28, 2016 6:53 am Post subject: Barco RGB Output Amp R7621195 |
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These are the big black RGB output amps from the 1209 series projectors. Does anyone have the schematics for these.
Thanks 
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gjaky
Joined: 05 Jun 2010
Posts: 2802
Location: Budapest, Hungary
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| Posted: Sun Feb 28, 2016 8:49 am Post subject: |
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Can you share a photo how it looks closer? I always looked for the schematics of these -without success...
All I knew these use a push-pull output stage, perhaps VPA13s in them, if so these should outperform every other Barco neckboard...
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projectors in the past : NEC 6-9PG xtra, Electrohome Marquee 6-7500, NEC XG 1351 LC ( with super modified Electrohome VNB neckboard !!!)
current: VDC Marquee 9500LC
The MOD: VNB-DB, VIM-DB
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mp20748
Joined: 12 Sep 2006
Posts: 5689
Location: Maryland
TV/Projector: 9500LC Ultra / Super 02 and 03 VIM
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| Posted: Sun Feb 28, 2016 9:31 am Post subject: |
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| gjaky wrote: | | these should outperform every other Barco neckboard... |
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redfox001
Joined: 16 Mar 2009
Posts: 2257
Location: The Netherlands
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| Posted: Sun Feb 28, 2016 9:58 am Post subject: |
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Vpj08b on the cine8 809 and version vph06 on the earlier I am afraid 75MHz or so
 image by Radio Head, on Flickr
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redfox001
Joined: 16 Mar 2009
Posts: 2257
Location: The Netherlands
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redfox001
Joined: 16 Mar 2009
Posts: 2257
Location: The Netherlands
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| Posted: Sun Feb 28, 2016 10:44 am Post subject: |
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Both on ebay and how difficult can it be to make a small print that fits the heatsinc with the right parts?
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redfox001
Joined: 16 Mar 2009
Posts: 2257
Location: The Netherlands
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| Posted: Sun Feb 28, 2016 10:52 am Post subject: |
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There are schematics of 1208 with vph08 I think neckboards are the same.
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km987654
Joined: 25 Jul 2007
Posts: 2874
Location: Australia
TV/Projector: Barco BG809s
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| Posted: Sun Feb 28, 2016 11:01 am Post subject: |
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| gjaky wrote: | Can you share a photo how it looks closer? I always looked for the schematics of these -without success...
All I knew these use a push-pull output stage, perhaps VPA13s in them, if so these should outperform every other Barco neckboard... |
I have some of these. I will take some pics when I can. Someone must have a service manual for the BG1209.
Last edited by km987654 on Sun Feb 28, 2016 11:04 am; edited 1 time in total
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km987654
Joined: 25 Jul 2007
Posts: 2874
Location: Australia
TV/Projector: Barco BG809s
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| Posted: Sun Feb 28, 2016 11:03 am Post subject: |
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| redfox001 wrote: | Vpj08b on the cine8 809 and version vph06 on the earlier I am afraid 75MHz or so
image by Radio Head, on Flickr |
They are nothing like the above. See attached picture below.
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tschaeikaei
Joined: 08 Apr 2013
Posts: 490
Location: Germany/Saarland
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| Posted: Sun Feb 28, 2016 11:35 am Post subject: |
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Hi,
the 1209s uses the VPJ08B, too. Had them here, but yes, they're long gone.
Regards, Julian
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Marquee 9500U edgeblend P43 | NEC 9PG
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gjaky
Joined: 05 Jun 2010
Posts: 2802
Location: Budapest, Hungary
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| Posted: Sun Feb 28, 2016 1:46 pm Post subject: |
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I think the BG1200 had similar "neck boxes" which other I don't know... Greg Eisemann probably would know 
_________________
projectors in the past : NEC 6-9PG xtra, Electrohome Marquee 6-7500, NEC XG 1351 LC ( with super modified Electrohome VNB neckboard !!!)
current: VDC Marquee 9500LC
The MOD: VNB-DB, VIM-DB
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gjaky
Joined: 05 Jun 2010
Posts: 2802
Location: Budapest, Hungary
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km987654
Joined: 25 Jul 2007
Posts: 2874
Location: Australia
TV/Projector: Barco BG809s
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| Posted: Mon Feb 29, 2016 6:58 am Post subject: |
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I believe the same neck board was used for the 1200 and 1209 the only variation was for Sony or MEC Tubes.
This is a shot from Greg Eisemann where he has changed the VPA13 for a VPA18. There are two of these in this amp type.
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km987654
Joined: 25 Jul 2007
Posts: 2874
Location: Australia
TV/Projector: Barco BG809s
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| Posted: Mon Feb 29, 2016 8:08 am Post subject: |
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Here is what I have. The part number is R7621191.
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redfox001
Joined: 16 Mar 2009
Posts: 2257
Location: The Netherlands
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| Posted: Mon Feb 29, 2016 9:30 am Post subject: |
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The faq tips manual section says
1209 Upgraded convergence tray, newly designed double sided circuit boards and dynamic astigmatism adjustment. New RGB end-stages.
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redfox001
Joined: 16 Mar 2009
Posts: 2257
Location: The Netherlands
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| Posted: Mon Feb 29, 2016 9:54 am Post subject: |
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It syas these where to noisy that sounds like the ad834 design for Marquee.
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km987654
Joined: 25 Jul 2007
Posts: 2874
Location: Australia
TV/Projector: Barco BG809s
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| Posted: Mon Feb 29, 2016 11:18 am Post subject: |
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How does any of this help with the schematics?
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redfox001
Joined: 16 Mar 2009
Posts: 2257
Location: The Netherlands
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| Posted: Mon Feb 29, 2016 11:51 am Post subject: |
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Send them to someone for reverse enginering. Clearly there are no schematics.
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redfox001
Joined: 16 Mar 2009
Posts: 2257
Location: The Netherlands
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| Posted: Mon Feb 29, 2016 2:41 pm Post subject: |
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I am seriously available. I could find out what the connector connect to and what voltages you need.
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km987654
Joined: 25 Jul 2007
Posts: 2874
Location: Australia
TV/Projector: Barco BG809s
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| Posted: Mon Feb 29, 2016 8:34 pm Post subject: |
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| redfox001 wrote: | | I am seriously available. I could find out what the connector connect to and what voltages you need. |
Ok if there are no schematics then that might be an option
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