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Barco BG800 problems

Discussion in 'Projectors, Screens & Video Processors' started by The Mole, Mar 13, 2005.

  1. The Mole

    The Mole
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    Help!

    Having had a couple of years use of my BG800 projector, it refused to turn on tonight.

    Closer inspection showed the red light wasn't on either, so I assume there is something up with the electronics.

    It isn't the fuses in the power supply bit (section R) (or wasn't until I blew them trying to trace the circuits!)

    Anyone got any other suggestions, cos I am stumped?
     
  2. ledoctt

    ledoctt
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    Hi you said that the led Stand by wil not lighting?? You must verificated the fuse 125mA on the subunit of the power supply.......
    If the fuse it's burned. You must have problems with TRANSFO StanD.BY and some transistor around...
     
  3. The Mole

    The Mole
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    Why can I find the 125mA fuse? I have found the 2 3.15A fuses in section R, but couldn't see any others.

    Thanks,

    Phil
     
  4. arbey

    arbey
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    Like Ledoctt has said, it's the fuse on the subunit of the powersuply (section Q).
    The powersuply board is the second board from the right. (barco is on table, you behind it)

    regards
     
  5. The Mole

    The Mole
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    Thanks very much guys! Have checked the fuse, and low and behold it isn't conductive, despite looking intact (very strange).

    Given I have blown the two main fuses, it will be at least tomorrow when I replace them all, but I will give you a shout when I do.

    Thanks again,

    Phil
     
  6. The Mole

    The Mole
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    Gaaah - after finally geting some time to work on the PJ (don't ask!) I've found and replaced all three fuses.

    The small, 125mA fuse is definitely the culprit. Despite replacing it with a slightly higher (160mA) fuse which was all I could find at Maplins, it blows instantly when the power switches on. Does it have to be a slow-blow fuse, or will this only knacker other bits of the circuits that haven't already died? If it should be a quick-blow, anyone got any ideas where to start diagnosing problems? Nothing on that board looks blown (no charring, no strange smells, no melted solder) so I'm at a bit of a loss.

    Anyone had similar problems and fixed them without going to an specialist electrician? With going to an specialist electrician? Any ideas how much one would charge and where to find one?

    Would like to get it running again, but if thats not possible, do any sites etc buy tubes and or bits from these projectors? The projector has less than 2500 hours on it total, so the tubes are in lovely condition :(
     
  7. Kjelli

    Kjelli
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    Stop replacing the fuses, something is wrong and you could damage more by replacing the fuses all the time.

    Talk to a crt repairman, Im 90% sure he will tell you what needs to be fixed.
    I've had the same problem with a BD800, and I seem to remember the problem was with the HVPS, on the other hand it is several years ago and Im not 100% sure it was the HVPS. Anyway this was a common problem with the 800 model, and most poeple repairing CRT projectors know what the problem is.

    Kjell
     
  8. Roland @ B4

    Roland @ B4
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    Phill
    send us an email with the part number (76*****) I may have one.

    Barco ar agetting a bit arsy at the moment about spares supply. but I wouldn't start breaking your projector for spares just now.
     

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