1. Join Now

    AVForums.com uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Barco 801 Blue CRT.

Discussion in 'Projectors, Screens & Video Processors' started by thelaw, Oct 18, 2003.

  1. thelaw

    thelaw
    Guest

    Products Owned:
    0
    Products Wanted:
    0
    Ratings:
    +0
    Well,

    I just got a Barco D801s for virtually nothing from a friend, its been in a pub for about a year. I have been using it and its working fine but the blue tube is a bit worse for wear (quite literally). Green is fine, as is red (red looks virtually new, but they always seem to).

    Here's the thing, on the blue tube I can actually see that the previous owner watched music choice on sky (all static, the worst thing that they could have possibly watched!) I can also tell that they had it on the 70's and 80's channel on music choice!. The tube is not as burnt as many i have seen, i would just like to 'even' it out so that i dont see the horrible logos etc. Now considering that i spent very little on getting this machine, I can still afford a s/h blue tube (one that is maybe worn, but has no logos and is still very usable). If anyone happens to be parting with a tube that will fit the 801s, please do contact me with a price.

    For the time being, is there any way i can even out the burn without burning it too much more?

    Cheers,
    Jon
     
  2. Roland @ B4

    Roland @ B4
    Active Member

    Joined:
    Apr 11, 2001
    Messages:
    2,238
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    51
    Location:
    Reading.
    Ratings:
    +32
    It's always the blue
    I'll look in the cupboard for a worn but don't hold out much luck
    There are ways of evening out tube wear it requires a negative of whatever is burnt in. Then you zap hard and bright and hope the rest of the tube goes the same way.

    I have tube I'm going to try this on.
     
  3. chrisgeary

    chrisgeary
    Well-known Member

    Joined:
    Jul 23, 2003
    Messages:
    2,501
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    86
    Location:
    Newbury
    Ratings:
    +173
    roland.. would another possibility be:
    assuming the screen is 16:9, that leaves a lot of tube face largely unused. so, what if the raster was shifted down (again assuming the logos are normally at the top of the screen), and then adjust the projector's firing angle accordingly? i guess you might get a strip at the bottom of the image where the phosphor hasnt been used and looks brighter but at least those logos would be gone?
     
  4. Boris Blank

    Boris Blank
    Member

    Joined:
    Aug 7, 2000
    Messages:
    1,711
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    66
    Location:
    Outpost 31
    Ratings:
    +170
    There was an excellent thread on this over at AVS Forums, pictures and details of how to do it. As luck would have it I can't find it now but its worth having a good search as it was very successful!
    Paul
     
  5. Roland @ B4

    Roland @ B4
    Active Member

    Joined:
    Apr 11, 2001
    Messages:
    2,238
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    51
    Location:
    Reading.
    Ratings:
    +32
    You would have to tip the projector to compensate and you will end up with extra (or less) keystone correction.
    It's always worth a go.
     
  6. nfordenfield

    nfordenfield
    Banned

    Joined:
    Apr 9, 2001
    Messages:
    625
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    19
    Location:
    Kent
    Ratings:
    +0
    Roland, have you got a green 1208/2 tube knocking around.

    Rgds

    Nathan
     
  7. Roland @ B4

    Roland @ B4
    Active Member

    Joined:
    Apr 11, 2001
    Messages:
    2,238
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    51
    Location:
    Reading.
    Ratings:
    +32
    yes
     
  8. thelaw

    thelaw
    Guest

    Products Owned:
    0
    Products Wanted:
    0
    Ratings:
    +0
    Roland, can a 07MP tube be used in place of the 07MSP in the 801s?

    Cheers,
    Jon
     
  9. nfordenfield

    nfordenfield
    Banned

    Joined:
    Apr 9, 2001
    Messages:
    625
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    19
    Location:
    Kent
    Ratings:
    +0
    sorry to hijack thread, can you pm me with price/condition?

    cheers
     
  10. Roland @ B4

    Roland @ B4
    Active Member

    Joined:
    Apr 11, 2001
    Messages:
    2,238
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    51
    Location:
    Reading.
    Ratings:
    +32
    Only for about 2 seconds. Do it on Nov 5th and impress your friends and family. It would be better than fireworks :laugh:
     
  11. thelaw

    thelaw
    Guest

    Products Owned:
    0
    Products Wanted:
    0
    Ratings:
    +0
    But 07MSP's can be run in a 07MP based machine? (I definately read this somewhere!)

    Cheers,
    Jon
     
  12. Roland @ B4

    Roland @ B4
    Active Member

    Joined:
    Apr 11, 2001
    Messages:
    2,238
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    51
    Location:
    Reading.
    Ratings:
    +32
    Possibly, I'm just saying I haven't done nor would I try it. without further evidence.
     
  13. thelaw

    thelaw
    Guest

    Products Owned:
    0
    Products Wanted:
    0
    Ratings:
    +0
    hmm thats gonna make it even more difficult to find another tube, i was hoping that i could be looking for 07MPs too. I see they still make the 07MSPs, crtprojectors.co.uk sell them for £700 each (ouch!)

    Cheers,
    Jon
     
  14. thelaw

    thelaw
    Guest

    Products Owned:
    0
    Products Wanted:
    0
    Ratings:
    +0
    Just got a reply from Barco (amazed they still support the unit):

    "As I believe you are aware, the 800 and 801 series projectors used the Sony OM7 CRT. When the 801s series was built, the later CRT was available. The difference with this was that it required a higher focus voltage, and indeed had sharper results than the earlier CRTs.

    It was possible to fit the later CRTs in earlier projectors, but only if the Focus module was changed to the later type. This had a wider range of focus voltage output, so could support a mixture of early and later type CRTs in the same projector.

    Therefore, although I have no record of anyone doing this, I believe the reverse is possible, and put an old type CRT into an 801s without any other modification. Bear in mind, that the results may appear a little softer than you are used to."

    Roland or anyone else, do you have any blue or green 07MP's? :smashin:

    Best regards,
    Jon
     
  15. Apocalypse

    Apocalypse
    Standard Member

    Joined:
    Aug 14, 2002
    Messages:
    840
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    19
    Location:
    Sheffield
    Ratings:
    +0
    Your previous pj that I now run also needs a green tube, what are you doing to them :eek: j/k

    Roland can you PM with details if have a spare 1208/2 green tube, thanks.
     

Share This Page

Loading...