Hi, joe2000chevy.....
The bulb you ordered from ywh was a JYd AC right??
If it's an AC bulb, the polarity of the wires that connect to your Viewsonic's lamp connector will not matter (ie. it won't matter which way around you connect the wires with an AC bulb).
Going by the specs on Projector Central, it does say "UHP", so this should mean the Viewsonic has a true AC ballast / lamp supply....
http://www.projectorcentral.com/ViewSonic-PJL802+.htm
All the specs I can find for this projector say it uses an UHP lamp, so you should be good to go with the JYd AC replacement.
So, don't worry about the wire polarities - if it works OK it should work either way around.
A few words of advice about installing the new bulb though.... I don't think these bulbs like being removed an re-installed, so try to get the bulb in the best position when you first install it.
Also, I realized with my Sharp DLP (using JYd AC bulb), that the alignment is far more critical than I first thought. The beam from the bulb in a DLP projector is generally focused into a fairly small spot that should be "aimed" directly onto the "light tunnel" behind the colour wheel (unless your PJ uses a small lens instead.
(Usually, the reflector stays in one place, and the bulb itself is moved, but some PJs might have reflector adustments too.)
If the spot is not aligned directly on the light tunnel (or lens), the light output will probably be reduced by a noticably large amount. This could also lead to other problems due to the spot overheating the wrong part of the optics (eg. the spot might be hitting the side of the light tunnel, or missing the lens completely). Your projector might be perfectly watchable if the spot isn't aimed in the right place, but could cause problems further down the line.
Of course, the main issue with all of this is finding a way of aligning the beam spot in the first place, as the lamp needs to be powered, then aligned, and then cemented in place (>scary!!!). I still haven't thought of an easy way of doing this, so I'm taking the chance on using my Sharp DLP with a mis-alignment atm.
Oh, and you might end up with bad brightness uniformity and / or light reflections even if you do get some light out of the PJ.
Ideally, you need see if the light tunnel or lens is actually directly in the center position relative to the lamp reflector, then find a way of holding the bulb in place while powering the bulb (DANGER!!!!) and aiming the spot onto a piece of paper or something where the light tunnel / lens would usually be?? Or, find a way of doing the same thing while the lamp is installed in the PJ.
Sorry I can't be more help on this, but in the factory, they obviously align the bulbs to the reflector in a special jig, and they use light sensors, computers, and all sorts of gadgets. (I don't think the alignment isn't anywhere near as critical in LCD projectors btw.)
OzOnE.
The bulb you ordered from ywh was a JYd AC right??
If it's an AC bulb, the polarity of the wires that connect to your Viewsonic's lamp connector will not matter (ie. it won't matter which way around you connect the wires with an AC bulb).
Going by the specs on Projector Central, it does say "UHP", so this should mean the Viewsonic has a true AC ballast / lamp supply....
http://www.projectorcentral.com/ViewSonic-PJL802+.htm
All the specs I can find for this projector say it uses an UHP lamp, so you should be good to go with the JYd AC replacement.
So, don't worry about the wire polarities - if it works OK it should work either way around.
A few words of advice about installing the new bulb though.... I don't think these bulbs like being removed an re-installed, so try to get the bulb in the best position when you first install it.
Also, I realized with my Sharp DLP (using JYd AC bulb), that the alignment is far more critical than I first thought. The beam from the bulb in a DLP projector is generally focused into a fairly small spot that should be "aimed" directly onto the "light tunnel" behind the colour wheel (unless your PJ uses a small lens instead.
(Usually, the reflector stays in one place, and the bulb itself is moved, but some PJs might have reflector adustments too.)
If the spot is not aligned directly on the light tunnel (or lens), the light output will probably be reduced by a noticably large amount. This could also lead to other problems due to the spot overheating the wrong part of the optics (eg. the spot might be hitting the side of the light tunnel, or missing the lens completely). Your projector might be perfectly watchable if the spot isn't aimed in the right place, but could cause problems further down the line.
Of course, the main issue with all of this is finding a way of aligning the beam spot in the first place, as the lamp needs to be powered, then aligned, and then cemented in place (>scary!!!). I still haven't thought of an easy way of doing this, so I'm taking the chance on using my Sharp DLP with a mis-alignment atm.
Oh, and you might end up with bad brightness uniformity and / or light reflections even if you do get some light out of the PJ.
Ideally, you need see if the light tunnel or lens is actually directly in the center position relative to the lamp reflector, then find a way of holding the bulb in place while powering the bulb (DANGER!!!!) and aiming the spot onto a piece of paper or something where the light tunnel / lens would usually be?? Or, find a way of doing the same thing while the lamp is installed in the PJ.
Sorry I can't be more help on this, but in the factory, they obviously align the bulbs to the reflector in a special jig, and they use light sensors, computers, and all sorts of gadgets. (I don't think the alignment isn't anywhere near as critical in LCD projectors btw.)
OzOnE.
hey guys!
i've been following along here for a while. i just got a Epson Powerlite 54c, and hopefully will have it fixed soon. it did come with a bulb (thank god!) but i don't know if it works. it says it uses a 200w UHE bulb. does anyone know if YWH's bulbs will work? i'm not sure what makes a bulb a UHE / UHP, etc. any help will be appreciated.
thanks-
BadBoy
i've been following along here for a while. i just got a Epson Powerlite 54c, and hopefully will have it fixed soon. it did come with a bulb (thank god!) but i don't know if it works. it says it uses a 200w UHE bulb. does anyone know if YWH's bulbs will work? i'm not sure what makes a bulb a UHE / UHP, etc. any help will be appreciated.
thanks-
BadBoy
Oz, thanks for the infor very usefull i thought about the AC polarity being either way but like to double check. and the other info useful as well. 5he Viewsonic is a e lcd projector with a linical/sq. type fresnel infront and rear of light tunnel with three seperate first surface mirrors so hopefully alighnment will not be as toughy as a dlp projector but i will post pictures of it torn down and mod then finalresults.
YWH. Pictures help alot thank you again
Joe
YWH. Pictures help alot thank you again
Joe
Hi ! mrriso
that Is not the only option, that Is 100% successful.
I Can use a Jyd DC lamp in my reflector but a some risk.
there is a other way:
I can dig out a burner from a original projector lamp kit, and sell this burner to you. 100% successful and cheaper.
the reflector of original projector lamp kit is unwonted, so sell burner only.
that Is not the only option, that Is 100% successful.
I Can use a Jyd DC lamp in my reflector but a some risk.
there is a other way:
I can dig out a burner from a original projector lamp kit, and sell this burner to you. 100% successful and cheaper.
the reflector of original projector lamp kit is unwonted, so sell burner only.
Hello all.
New here, have read and learned quite a bit .
Very nice indeed.
Well between stepping up in quality of projectors and going through a couple I have taken yet another plunge on purchasing yet another projector.
My main decision maker for this new Olympus VP-1 project was this very forum and the availability of a lamp bulb for it. The bulb is 120W UHP
Here's a link: http://www.projectorcentral.com/Olympus-VP-1.htm
And the last production is 2005 so from what I've read it should be an AC current bulb. Lamp number I believe is: 205201
I also have made a purchase on an EIKI Projector LC4200 .
http://www.projectorcentral.com/EIKI-LC-4200.htm
The lamp number: 610 257 6269 , not sure on that one as the seller states that the projector lights and shuts off , well I'm not too familiar with the symptoms of powersupply / ballast / lamp problems. 195W Metal Halide
Here's a post that was in January 06 > Post #385
Not sure if there are any updates so are there any ideas on that one?
I primarily am looking for the bulb for the Olympus VP-1 and secondarily for the EIKI LC4200
I have read about the problems on finding a medium for mounting these lamps and have an idea if I may.
Has anyone tried hydraulic cement? It's a cement used for quick repair of water based problems in cement foundations and is fine in texture.
It sets very fast and is water based for easy cleanup.
I would also think it would handle the heat well.
====================
ywh <<<<<<Question for.
Needed: Bulb for Olympus VP-1 120w UHP ( if I go with a 150W or 200W bulb will I get more lamp hours? )
EIKI LC4200 195W Metal Halide
What bulbs will I need for these projects and how much total Shipped?
Looking forward to your answer~
New here, have read and learned quite a bit .
Very nice indeed.
Well between stepping up in quality of projectors and going through a couple I have taken yet another plunge on purchasing yet another projector.
My main decision maker for this new Olympus VP-1 project was this very forum and the availability of a lamp bulb for it. The bulb is 120W UHP
Here's a link: http://www.projectorcentral.com/Olympus-VP-1.htm
And the last production is 2005 so from what I've read it should be an AC current bulb. Lamp number I believe is: 205201
I also have made a purchase on an EIKI Projector LC4200 .
http://www.projectorcentral.com/EIKI-LC-4200.htm
The lamp number: 610 257 6269 , not sure on that one as the seller states that the projector lights and shuts off , well I'm not too familiar with the symptoms of powersupply / ballast / lamp problems. 195W Metal Halide
Here's a post that was in January 06 > Post #385
Not sure if there are any updates so are there any ideas on that one?
I primarily am looking for the bulb for the Olympus VP-1 and secondarily for the EIKI LC4200
I have read about the problems on finding a medium for mounting these lamps and have an idea if I may.
Has anyone tried hydraulic cement? It's a cement used for quick repair of water based problems in cement foundations and is fine in texture.
It sets very fast and is water based for easy cleanup.
I would also think it would handle the heat well.
====================
ywh <<<<<<Question for.
Needed: Bulb for Olympus VP-1 120w UHP ( if I go with a 150W or 200W bulb will I get more lamp hours? )
EIKI LC4200 195W Metal Halide
What bulbs will I need for these projects and how much total Shipped?
Looking forward to your answer~
Hi Dumbfounded !
the Bulb for Olympus VP-1 120w UHP is 120W JYD/AC, if you go with a 150W or 200W bulb will you get more lamp hours;-)
the Bulb for EIKI LC4200 195W Metal Halide is 200W JYS, but I dont know AC or DC, you have to check it, test the V of lamp, or give me a pic of the bulb. close pic
1*120W JYD/AC + 1* 200W JYS + Shipping =$105
the Bulb for Olympus VP-1 120w UHP is 120W JYD/AC, if you go with a 150W or 200W bulb will you get more lamp hours;-)
the Bulb for EIKI LC4200 195W Metal Halide is 200W JYS, but I dont know AC or DC, you have to check it, test the V of lamp, or give me a pic of the bulb. close pic
1*120W JYD/AC + 1* 200W JYS + Shipping =$105
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