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Decibel
Joined: 31 May 2007
Posts: 904
Location: Roma - Italia
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| Posted: Mon Apr 06, 2009 11:58 pm Post subject: Barco 808: strange problem |
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A my friend have a Barco Graphics 808 very fine.
Projector have low hours (700), original parts, etc....
My friend has written to me his problem and I have decided to explain it here.
| Massimo wrote: |
My Barco 808 introduces a quite annoying problem. Sometimes, during the normal operation or already in boot phase (that is in warm-up screen) it introduces a under focus phenomenon. We tried to replace the following cards: R7621705 (SMPS), R762506 (SMPS+G2), R762503(5) (MAGNETIC FOCUS). Nothing is changed! The flaw occasionally is present. Sometimes, if I turn off and on the projector it correctly works.
Instead, at times, the problem still remain and there is nothing to do! Since I have decided to take a picture in order to show the flaw it hasn't displayed anymore. What's the matter? |
Thank you
Domenico
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Domenico (Barco fan!)
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Elaine Benes
Joined: 25 Apr 2006
Posts: 1416
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| Posted: Tue Apr 07, 2009 1:23 am Post subject: |
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EHT.
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Kiev Savoie
Joined: 25 Oct 2007
Posts: 432
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| Posted: Tue Apr 07, 2009 1:24 am Post subject: |
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My Barco Graphics 1208 which is very similar did something like this. for a few days or maybe weeks until it completely failed. the problem was in the HV section and it turned out the EHT went out. When this focus problem happens does the picture get a little smaller as well?
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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: Tue Apr 07, 2009 2:12 am Post subject: |
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Correct. A change in focus can indeed be the focus board, but usually it's HV related. Too much or too little can cause lack of focus, as well as a fluctuating picture size.
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Decibel
Joined: 31 May 2007
Posts: 904
Location: Roma - Italia
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| Posted: Tue Apr 07, 2009 2:44 pm Post subject: |
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Thank you, my friend will seek the EHT board.
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Domenico (Barco fan!)
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perisoft
Joined: 29 Aug 2007
Posts: 2920
Location: Ithaca, NY
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| Posted: Tue Apr 07, 2009 3:57 pm Post subject: |
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The other option, of course, is just to keep the camera nearby so the PJ knows you mean business. 
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Kiev Savoie
Joined: 25 Oct 2007
Posts: 432
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| Posted: Tue Apr 07, 2009 10:24 pm Post subject: |
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Curt may have an EHT to sell to your friend.
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Decibel
Joined: 31 May 2007
Posts: 904
Location: Roma - Italia
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| Posted: Tue Apr 07, 2009 10:50 pm Post subject: |
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| Kiev Savoie wrote: | | Curt may have an EHT to sell to your friend. |
Thanks for the suggestion 
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Domenico (Barco fan!)
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Decibel
Joined: 31 May 2007
Posts: 904
Location: Roma - Italia
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| Posted: Tue Apr 07, 2009 10:51 pm Post subject: |
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| perisoft wrote: | | The other option, of course, is just to keep the camera nearby so the PJ knows you mean business. |
??? sorry, I don't understand .... business?
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Domenico (Barco fan!)
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Heywood Jablome
Joined: 12 Mar 2006
Posts: 1548
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| Posted: Tue Apr 07, 2009 11:40 pm Post subject: |
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| Decibel wrote: | | perisoft wrote: | | The other option, of course, is just to keep the camera nearby so the PJ knows you mean business. |
??? sorry, I don't understand .... business? |
Euphemism, indicating one is serious and including implied violence. In this context, 'means business' is am implicit threat such that the projector will behave as you (your friend) desires. The projector, being inanimate and therefor immune to threats implicit or explicit, makes the above statement a joke.
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"Those countries which lag behind in industry, in the application of mechanics and technical chemistry, in the careful selection and utilization of natural products, where the respect for such activities does not permeate all classes of society, will unfailingly decline in prosperity. They will sink faster when neighbor states, with an energetic exchange between science and industry, go forward with renewed vitality."
-- Baron Alexander von Humboldt: 1769-1859
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Elaine Benes
Joined: 25 Apr 2006
Posts: 1416
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| Posted: Wed Apr 08, 2009 12:48 am Post subject: |
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| Heywood Jablome wrote: | | Decibel wrote: | | perisoft wrote: | | The other option, of course, is just to keep the camera nearby so the PJ knows you mean business. |
??? sorry, I don't understand .... business? |
Euphemism, indicating one is serious and including implied violence. In this context, 'means business' is am implicit threat such that the projector will behave as you (your friend) desires. The projector, being inanimate and therefor immune to threats implicit or explicit, makes the above statement a joke. |
Heywood Jablome: Thank you for such a sublime explanation, it is a treat to read something so concise and accurate ! 
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Decibel
Joined: 31 May 2007
Posts: 904
Location: Roma - Italia
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| Posted: Wed Apr 08, 2009 6:47 am Post subject: |
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| Heywood Jablome wrote: |
Euphemism, indicating one is serious and including implied violence. In this context, 'means business' is am implicit threat such that the projector will behave as you (your friend) desires. The projector, being inanimate and therefor immune to threats implicit or explicit, makes the above statement a joke. |
Thank you, it's difficult to understand quickly due to the different language 
I always use a translator but I don't always succeed in understanding the sense than you write.
I'm learning
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Domenico (Barco fan!)
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