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Is this a dead lamp or dead power supply?

Discussion in 'Projectors, Screens & Video Processors' started by Spurst, Feb 19, 2003.

  1. Spurst

    Spurst
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    Davis Powerbeam VI

    Symptoms:
    I recently picked this up at a local pawn shop, where we had it working. I took it home a week later, plugged in the cord, flipped the switch, and nothing happens. I've pressed every button on the CP & remote, to no avail.

    The fans don't spin, nothing lights up, and I'm lost...

    There is a module that comes out to place a fuse. As you can see in the picture. I also took the projector apart and checked out the fuse on the internal power supply.

    I am simply at a loss here. Being a poor college student, I can't really afford a ton of $$ to get this fixed at a repair shop, so any help at all would be great. I've gone through it a bit with my multimeter, simply checking for a bad component, but nothing has come up as bad, yet.

    http://xchain.netfirms.com/projector.JPG
    http://xchain.netfirms.com/fuse1.JPG
    http://xchain.netfirms.com/fuse2.JPG
    http://xchain.netfirms.com/side.JPG
    http://xchain.netfirms.com/fusemodule.JPG
     
  2. Spurst

    Spurst
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    Here's some more information I gleaned from the people that used this
    product before it broke down.

    Everything worked very well on the unit until it was turned on by someone
    after it had been shipped in cold weather and not allowed to warm up to room
    temperature.

    Hope that helps..
     
  3. Spurst

    Spurst
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    any ideas?
     
  4. MatC

    MatC
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    Does it power up at all? my projector powers up enough to flash a light at me when the bulb needs replacing.
    If you don't even get a light, then I would suggest the power supply, although if it's a logic controlled power switch then you may have some issue with that.
    You might be able to check for voltages coming out of the power supply, you seem to be able to use a multimeter...
     
  5. Spurst

    Spurst
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    The projector "clicks" once the power switch is flipped. I know at least part of it is now getting power. I am not getting any fan activity or anything, though.

    "click" comes from the black box..
    http://xchain.netfirms.com/back.JPG

    http://xchain.netfirms.com/front.JPG

    In case the problem is now a bad lamp, what are some things to look for with the lamp? The current bulb doesn't have any discoloration and no cracks that I notice.
    http://xchain.netfirms.com/bulb1.JPG
    http://xchain.netfirms.com/bulb2.JPG
    http://xchain.netfirms.com/bulb3.JPG
    http://xchain.netfirms.com/bulb4.JPG
     
  6. beta

    beta
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    sounds like somethings gone pop causing the unit to drain excess current when on causing the protection circuit in the power supply to come on (ie a relay clicking)

    could be wrong

    sounds like a tech is needed for this one....:( :( :( :( :(
     
  7. Spurst

    Spurst
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    I now have a Brand new bulb to use with this projector... just to make sure that is *not* the problem.

    I have also noticed the 'standby' button becomes illuminated when the unit is powered on. Granted, the fans still do not spin, bu this lets me know power is within the unit.
     

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