How to tell if projector is dead or bulb is burnt out? Dukane 670

blaznc · 8th June 2005, 04:30 AM

I have a Dukane 670 with a 575w MH bulb and I am trying to figure out if the bulb is just dead or the whole thing went out. It was running fine (did not notice any dimming of light outpout) and all of a sudden 'click' nothing...no lights no fan and no power comming from the socket on the side. I know there is a gap in the metal halide bulbs so looking at the bulb doesn't help me. Are the fans still supposed to run even if the bulb is out? Tested the fuse with a continuity tester and it is ok. Anything else I can test to see if it still works short of buying a new bulb and sticking it in? Thanks!!

Brandon

Gizmotech · 8th June 2005, 06:44 PM

Remove bulb and power it up. Shine a very bright torch or floodlight through and see if there is an image.

blaznc · 8th June 2005, 08:54 PM

This is an overhead projector.

mdorani · 14th June 2005, 10:55 PM

metal halide bulbs dont just go click and die

only halogen does that, metal halide slowly goes dimmer and dimmer untill it shows no output, this diming process doesnt happen in 2 minutes- happens over 1000s of hours

nexarius · 15th June 2005, 10:04 PM

Sounds to me like a blown fuse or a broken switch or something. The fans would still operate even with a dead bulb, and you would see arcing in the bulb as the control gear tries to light it

Gizmotech · 20th September 2009, 01:10 AM

Could be the ignitor. Sometimes with faulty lamps, you can still see it flash but not fire up.

8th June 2005, 04:30 AM	#1
blaznc diyAudio Member Join Date: May 2005 Location: fdsafdsa	How to tell if projector is dead or bulb is burnt out? Dukane 670 I have a Dukane 670 with a 575w MH bulb and I am trying to figure out if the bulb is just dead or the whole thing went out. It was running fine (did not notice any dimming of light outpout) and all of a sudden 'click' nothing...no lights no fan and no power comming from the socket on the side. I know there is a gap in the metal halide bulbs so looking at the bulb doesn't help me. Are the fans still supposed to run even if the bulb is out? Tested the fuse with a continuity tester and it is ok. Anything else I can test to see if it still works short of buying a new bulb and sticking it in? Thanks!! Brandon

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8th June 2005, 06:44 PM	#2
Gizmotech diyAudio Member Join Date: Mar 2005	Remove bulb and power it up. Shine a very bright torch or floodlight through and see if there is an image.

8th June 2005, 08:54 PM	#3
blaznc diyAudio Member Join Date: May 2005 Location: fdsafdsa	This is an overhead projector.

14th June 2005, 10:55 PM	#4
mdorani diyAudio Member Join Date: Nov 2004 Location: underworld	metal halide bulbs dont just go click and die only halogen does that, metal halide slowly goes dimmer and dimmer untill it shows no output, this diming process doesnt happen in 2 minutes- happens over 1000s of hours

15th June 2005, 10:04 PM	#5
nexarius diyAudio Member Join Date: Oct 2004	Sounds to me like a blown fuse or a broken switch or something. The fans would still operate even with a dead bulb, and you would see arcing in the bulb as the control gear tries to light it

20th September 2009, 01:10 AM	#6
Gizmotech diyAudio Member Join Date: Mar 2005	Could be the ignitor. Sometimes with faulty lamps, you can still see it flash but not fire up.

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