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Motobias
Joined: 08 Jul 2008
Posts: 163
Location: Osnabrueck, Germany
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| Posted: Thu Nov 22, 2012 8:11 pm Post subject: Barco Retrographics 801s THE LEMON |
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ok...so i picked up a retrographics for cheap and just the fun of maybe bringing it back to life again - stupid me 
somebody stupid (or a whole crew) had laid hands on this one:
software comes up as graphics 800, tubes had been sealed with shitloads of black silicone because they must have leaked into the entire casing, in the process they broke of several bolts holding the tubes, lost a couple more and made a f*cking mess...
anyway - trying my luck and maybe i can learn something from working on this one 
first startup brought up a horrible smell and some magic smoke from the red video amp...and a full on, bright as the sun red tube!
i quickly pulled the plug and dug through the stuff that came with the projector...one videoamp was included 
after changing the videoamp, i simply couldnt get a picture from the red tube.
i changed over neckboard and videoamps from the working tubes with no result and i got really confused because i simply couldnt get it to work....till i got the video signal across from the green tube yeeeeey !
so now i need to find the cause of no video signal going to the red... and now it's up to you guys
what would be the next thing to check ?
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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 Nov 22, 2012 8:13 pm Post subject: |
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Yeah, I had two and gave up on them. Same thing, the glycol leaked all over the motherboard and nuked a bunch of stuff. You're sure having good luck finding CRTs in Germany!
Check the quad decoder and RGB switcher card. Those fail regularly.
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Motobias
Joined: 08 Jul 2008
Posts: 163
Location: Osnabrueck, Germany
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| Posted: Thu Nov 22, 2012 8:23 pm Post subject: |
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thank you ! first thing i'll do tomorrow morning !
i have two barco 808, can i safely swap these boards over ?
_________________
Most peope talk about HD without knowing the meaning and how to do it RIGHT !
FIGHTING STUPIDITY SINCE 1983
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km987654
Joined: 25 Jul 2007
Posts: 2874
Location: Australia
TV/Projector: Barco BG809s
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| Posted: Thu Nov 22, 2012 8:47 pm Post subject: |
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Strip it right down and start again. Parts are not expensive. If you don't you will be forever chasing problems.
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