Very new to this forum, and have a number of questions and some ideas.
I recently aqcuired a broken 3M MP-8020 projector for free. The logical fix for this would be to replace the lamp to begin with but having found the 3M 250w lamp kit (p/n EP1510) is $600+ USD this is not an option just to 'see' if it's the lamp. According to the manual there is an LED that indicates a blown lamp, and that's not showing so maybe the lamp is OK and it's the ballast or something.
This projector is also mannfactured as:
Hitachi CP-L500
Leisegang DV 250
Proxima 160-00072
Doe anyone know of any common faults with these models, and/or how to test if its the ballast or the lamp?
I disassembled the lamp assembly and found the actual lamp inside is an 'EYE' MSCR250H1H. I figured that it is probably way cheaper to buy this as a component & fit it back into the lamp 'cage' assembly but haven't had much luck finding a supplier for it.
Having a closer look at the lamp(see attached pic) I see that it is made up of a 2-1/2" double ended 250w MH arc tube which is potted into a nice reflector/carrier. So now the next idea is to try & find a very similar MH arc tube.
Most searching leads me to Aquarium or hydroponic lighting but the dimensions are usually too big or are for a big bulb assy that surrounds the arc tube.
Does anyone know if it's possible to find a 2 1/2" double ended 250w MH arc tube whicn I could pot into the 'eye' reflector to recondition the bulb presumably very cheaply?
Also, some pictures & reading lead me to believe that the 8"+ Industrial MH bulbs contain a glass bulb around an MH arc tube as a safety measure due to them usually being in overhead positions. If that is the case, is it possible to smash the outer bulb to get a usable double ended arc tube out of it?
I'm thinking that if I can successfully recondition this 'eye' lamp by replacing the arc tube, then it may be a viable option for DIY projectors as a small,cheap MH light source.
This MH lamp is 2-1/2" dia by 3' long so seems to be alot smaller than some of the other lamps you guys mention.
Thanks in advance. I've had a very interesting few days reading about DIY projectors which has me more convinced to find a way to recon the lamp assy if the ballast is OK rather than buying a new one at $600.
I recently aqcuired a broken 3M MP-8020 projector for free. The logical fix for this would be to replace the lamp to begin with but having found the 3M 250w lamp kit (p/n EP1510) is $600+ USD this is not an option just to 'see' if it's the lamp. According to the manual there is an LED that indicates a blown lamp, and that's not showing so maybe the lamp is OK and it's the ballast or something.
This projector is also mannfactured as:
Hitachi CP-L500
Leisegang DV 250
Proxima 160-00072
Doe anyone know of any common faults with these models, and/or how to test if its the ballast or the lamp?
I disassembled the lamp assembly and found the actual lamp inside is an 'EYE' MSCR250H1H. I figured that it is probably way cheaper to buy this as a component & fit it back into the lamp 'cage' assembly but haven't had much luck finding a supplier for it.
Having a closer look at the lamp(see attached pic) I see that it is made up of a 2-1/2" double ended 250w MH arc tube which is potted into a nice reflector/carrier. So now the next idea is to try & find a very similar MH arc tube.
Most searching leads me to Aquarium or hydroponic lighting but the dimensions are usually too big or are for a big bulb assy that surrounds the arc tube.
Does anyone know if it's possible to find a 2 1/2" double ended 250w MH arc tube whicn I could pot into the 'eye' reflector to recondition the bulb presumably very cheaply?
Also, some pictures & reading lead me to believe that the 8"+ Industrial MH bulbs contain a glass bulb around an MH arc tube as a safety measure due to them usually being in overhead positions. If that is the case, is it possible to smash the outer bulb to get a usable double ended arc tube out of it?
I'm thinking that if I can successfully recondition this 'eye' lamp by replacing the arc tube, then it may be a viable option for DIY projectors as a small,cheap MH light source.
This MH lamp is 2-1/2" dia by 3' long so seems to be alot smaller than some of the other lamps you guys mention.
Thanks in advance. I've had a very interesting few days reading about DIY projectors which has me more convinced to find a way to recon the lamp assy if the ballast is OK rather than buying a new one at $600.
Attachments
As I have said many times, modifing these lamps is a bad idea. They can, and will, explode at the slightest provocation and damage you and your projector ...Ushio Specs Mentioned Similar Bulbs.
I have seen ushio bulbs of this type and much smaller than this yesterday in one of their pdf specs.
I have seen ushio bulbs of this type and much smaller than this yesterday in one of their pdf specs.
Link http://www.ushio.com/files/SSTV_web.pdf
http://www.ushio.com/files/SSTV_web.pdf
http://www.ushio.com/files/PAV_web.pdf Page 17
http://www.ushio.com/files/SSTV_web.pdf
http://www.ushio.com/files/PAV_web.pdf Page 17
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