Barco 801s Error message.

Discussion in 'Projectors, Screens & Video Processors' started by j19hnd, Jan 20, 2002.

  1. j19hnd

    j19hnd
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    :eek: :eek: :eek: :eek: :eek: :eek:

    I have just bought a second hand Barco 801 S. Everything seems to work except for a convergence error in one of the convergence zones (bottom right hand corner).

    This error comes up when you try to adjust the convergence :-

    FAILURE:

    I2C error
    ADDR. EEH


    Can anyone help a newbie ?

    Is the convergence board damaged ?
    Can it be repaired ?
    How much would a second hand board cost?

    P.S. should this projector be line tripled for best results?
    I heard this projector might have a built in line doubler is this true?


    thanks for any help in advance
     
  2. Roland @ B4

    Roland @ B4
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    What a shame. Good projector and a real work horse. Did you not get any sort of warrentee with it?

    If you can converge the image I wouldn't worry. If its in the bottom corner of a 16x9 screen It shouldn't matter.

    I suspect one of the Bellas (black chips with lots of legs) has given up the ghost.

    Yes these can be repaired.

    Trust you to pick on the biggest board in the projector. A new replacement board would be about £2500. second hand recon on about a third to a half of that.

    These were big failures in the rental market becasue this board is about 2ft square and used to flex when moved about.

    There was no built in Line doubler for the 801s.
    A QuadScan in trippled mode is probably abouty right. Though if it's seen a lot of use then Doubling might be better.

    Try this. In case you didn't know the Convergence board is the big board under the lenses (on top of if its on the ceiling) It should just have two srews holding it in and the whole board slides out (if its a real new one ie only 6years old) then between the lenses are two enormous hand tighened screws holding in the heat sinks in place take these right out and then pull the board out. What you are checking for are the multipin connectors to see if one is bent.
     
  3. j19hnd

    j19hnd
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    thanks Roland for the info i did what you said with the convergence board it is a new type with the two large screws but it did not fix it .Can the damaged chip be found ?and be changed?and where could i get one? .THIS HELP IS MUCH APPRECIATED.:eek: :eek:
     
  4. Roland @ B4

    Roland @ B4
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    On the convergence board is the part number starts R76*****

    I need that and the product code of your projector which is on the label at the back 90******

    From that I can identify either a suitable board or the chip its self.
     
  5. j19hnd

    j19hnd
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    Hi Roland thanks for the quick replay the no. are762172s is the top board and the large board is 762172 but there is no R in them the art nr is 9000831 and ser nr 1049854 .Manufactured . March 1994 it has done 14500 hr the crts are in good con.
    THanks For All the Help.
    ;)
     
  6. Roland @ B4

    Roland @ B4
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    I think you will find the small top baord is a Convergence on Green module. (7621728) Not really needed for Home cinema but great to have.
    When you go to the convergence menu are you given the option of green only convergence?

    If so it shows the board is recognised.

    First check all the yellow connectors if one is loose you may have the answer.

    If not I would pull all the yellow connectors to this sub board and try it without with luck the fault lies here.

    One problem you can get with COG is that it can make the Red and blue sections of the convergence board work harder and hence overheat.
     
  7. j19hnd

    j19hnd
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    Hi Roland i did what you said and i got alot more errors.I put all the yellow plugs back on.That stop all the errors but the first one is still there
    I think it is what you said .That one chip is gone bust but i still have to find and replace.
    Any more helpfull ways to fix the problem
    and again thanks for your time.:confused:
     
  8. Roland @ B4

    Roland @ B4
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    It's a Barco chip and only available from them so they'll get you by the short and curlies.

    bit worried about the other errors you report.

    I'll come back on this one after a bit of reading
     
  9. arbey

    arbey
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    To Roland,
    and...did you do some reading about this?
    The reason i'm asking, i've the problem myself on the barco graphics808s.
    While trying to adjust gamma correction, all at once the image blanked and since then i have the folowing error: ERROR:FAILURE IN I2C BUS
    I get no code or adress with this error so i don't know where to go from here...
    Any help from anyone would be appreciated...

    regards
     
  10. Roland @ B4

    Roland @ B4
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    It's a big book :) (last post nearly 2 years ago)

    Arbey try reseating all the boards especially the convergence to see if that clears it.
     
  11. arbey

    arbey
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    Roland,
    thanks for the reply!
    I pulled out the convergence board, powered up and i got the error message again.
    I've done some reading too and i noticed that i have to try more then once reseating the boards, so i give that a second try tomorrow.
    The errormessage come up when i push the 'adj' button and then select 'random acces'. When i choose 'service' the error stays away...any ideas?

    regards
     
  12. arbey

    arbey
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    The error message says: FAILURE: SHORT CIRCUIT ON I2C BUS
    What does this mean?
    Does this mean there is a shorted circuit or does this mean i have to shortcut a circuit?

    regards
     
  13. arbey

    arbey
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    I have been swapping boards between a data808 and the broken graphics808s to determine which board could cause this error. I swapped over Sync/Vert.Defl.but the errormessage was still there. I swapped over Hor.Defl. but no luck. I then changed Mag.Focus/Hor.Shift and the errormessage didn't appear again!
    So, i now start looking for broken components!
    Great i could nail it down already to one board!
    Maybe this will help someone in future times...
    regards
     
  14. Roland @ B4

    Roland @ B4
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    Yet another plus for the modularity of Barco.

    (BTW you can put a BD / BG808 or BD808s into your BG808s)
    but don't do it the other way round. or that long resitor on the back will glow red before it melts the solder and falls off :confused:
     

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