Hi,
I just did a relamp on an EPSON PowerLite 5350 using an auto headlamp (or maybe it was an offroad headlamp bulb), and everything worked out, but there's just one problem.
IT'S TOO DIM!!! I can only use it in pitch darkness.
I am currently suffering from eye-strain from using it last night.
I was following an instructable from instructables.com from VIPER2475 on doing it. He used a real auto headlamp and connected both hi and low beams at once. I didn't do this and just got a hi-beam bulb i think.
I got a real headlamp bulb, got both filaments on, then looked at my projector and figured it would take a ton of work to get it to fit. I already had a tough time doing the other one, which was a bit smaller.
what I was wondering - is can I use a FXL overhead bulb? Those can be seen in broad daylight, and then some.
My projector is a 3-LCD model, so there tends to be drastic light loss from that.
I was also thinking that I could just make use of the ballast in my projector and just use a different bulb. If I get the voltage right and tune down the wattage, it should last, right? The only issue is finding the "low price" MH bulb. This option might not work though.
So, does anybody know what bulbs would be suitable?
Also I'd like to know about anybody's results with automotive bulbs.
I just did a relamp on an EPSON PowerLite 5350 using an auto headlamp (or maybe it was an offroad headlamp bulb), and everything worked out, but there's just one problem.
IT'S TOO DIM!!! I can only use it in pitch darkness.
I am currently suffering from eye-strain from using it last night.
I was following an instructable from instructables.com from VIPER2475 on doing it. He used a real auto headlamp and connected both hi and low beams at once. I didn't do this and just got a hi-beam bulb i think.
I got a real headlamp bulb, got both filaments on, then looked at my projector and figured it would take a ton of work to get it to fit. I already had a tough time doing the other one, which was a bit smaller.
what I was wondering - is can I use a FXL overhead bulb? Those can be seen in broad daylight, and then some.
My projector is a 3-LCD model, so there tends to be drastic light loss from that.
I was also thinking that I could just make use of the ballast in my projector and just use a different bulb. If I get the voltage right and tune down the wattage, it should last, right? The only issue is finding the "low price" MH bulb. This option might not work though.
So, does anybody know what bulbs would be suitable?
Also I'd like to know about anybody's results with automotive bulbs.
other tut
I found anothe tut by the same guy for a mains halogen light, he says the brightness is much better, hell I might give one of these a try they cost next to nothing as the Halogen mod uses Mains power and the Car headlamp mod uses 12v Power
could you try connecting hi and low beams shorin and posting some pics of the picture quality, doesn't seem that difficult looks similar to a Bi colour LED you have to wire up power to both both filaments inside the bulb which correspond to seperate connectors on end of bulb.
I found anothe tut by the same guy for a mains halogen light, he says the brightness is much better, hell I might give one of these a try they cost next to nothing as the Halogen mod uses Mains power and the Car headlamp mod uses 12v Power
could you try connecting hi and low beams shorin and posting some pics of the picture quality, doesn't seem that difficult looks similar to a Bi colour LED you have to wire up power to both both filaments inside the bulb which correspond to seperate connectors on end of bulb.
both leads
I did that, but I haven't put it in the projector yet. I'm going to build a reflector with that set up and see if it's better.
Hopefully it will be bright enough to see in the daytime.
I did that, but I haven't put it in the projector yet. I'm going to build a reflector with that set up and see if it's better.
Hopefully it will be bright enough to see in the daytime.
modgod said:
Thx for the post - that increases my faith in overhead bulbs.. I will definitely have to try it soon.
any idea what size the OHP bulb power systems are? could they fit inside a projector?
might be able to put them in an external enclosure and run cables in to the projector to power the FXL bulb, I'm gonna try searching to see if anyone else has done this before.
might be able to put them in an external enclosure and run cables in to the projector to power the FXL bulb, I'm gonna try searching to see if anyone else has done this before.
nope... try a google image search..
From the thread, if all you need is a diode and the bulb, then it would be crap small.... The diode would be attached to a heatsink and everything but that doesn't come out to more than the size of a flash drive (if not smaller)
that's all just a guess
From the thread, if all you need is a diode and the bulb, then it would be crap small.... The diode would be attached to a heatsink and everything but that doesn't come out to more than the size of a flash drive (if not smaller)
that's all just a guess
Don't high wattage lamps like the ENX hes using require a PSU to provide the wattage and not just a voltage stepdown?
- Regards Modgod
- Regards Modgod
um... i don't know. I'm really just going off of what that thread said about how to power the FXLs, not the ENX bulbs. Probably not much different. The place where I work uses both (i work there during the school year only, so i can't find out for sure).
You know? I think i'll give them a call right now and find out what i can about OHP electronics. I could swear it was very simple.
You know? I think i'll give them a call right now and find out what i can about OHP electronics. I could swear it was very simple.
that would be great, please post any info you got. I'm happy I found a £41 real bulb replacement, but if I can get a long term DIY solution that uses £10-20 bulbs I'd be much happier 🙂
I called them right after I last posted and I was right! For ENX and FXL, it's just the bulb, the power input, and a power diode that brings the voltage down a bit.
These are US-rated OHPs though. However, the input power is 110V AC, not 240V like other countries. This may be what you were thinking when you said they need a PS of some sort. Yeah, I'd say you'd need such a thing in this case. A step-down transformer or something.
These are US-rated OHPs though. However, the input power is 110V AC, not 240V like other countries. This may be what you were thinking when you said they need a PS of some sort. Yeah, I'd say you'd need such a thing in this case. A step-down transformer or something.
I did this a while back. Here's the article I wrote on it.
Hope it helps.
Oh a trick I learned but didn't include, if you use the guts of a projector designed for a diferent bulb, say an 82 volt bulb versus a 86 volt bulb for the fxl you'll get enhanced life. Also look into the FXL-10 which is a long life bulb.
Hope it helps.
Oh a trick I learned but didn't include, if you use the guts of a projector designed for a diferent bulb, say an 82 volt bulb versus a 86 volt bulb for the fxl you'll get enhanced life. Also look into the FXL-10 which is a long life bulb.
FYI, As far as i can tell OHP Power supplies (at least the ones I've gutted) are pretty simple.
The pertinent electronics involved were a large diode, a large resistor, the socket and I think a heat cutoff. Thats it.
Though i must admit that the OHP was an older unit from 3M. No complex anything in there.
The pertinent electronics involved were a large diode, a large resistor, the socket and I think a heat cutoff. Thats it.
Though i must admit that the OHP was an older unit from 3M. No complex anything in there.
Look at YWH Reply
YWH sells lamps that will fit into the original reflectors of burnt out lamps. He sells 2 types for most units, an economy which looks fine in the dark for around $40-$75 US Dollars & a brighter, longer lasting lamp for $80-$120. I have rebuilt over 200 lamps using his lamps with good results.
WARNING: DLP/LCD projectors use PULSE START LAMPS that put out around 4,000-6,000 VOLTS DC that will kill you fast!! Never touch wires until after lamp has started & is running for few minutes then voltage settles down to 70-100 volts to measure.
Good luck & have fun!!
YWH sells lamps that will fit into the original reflectors of burnt out lamps. He sells 2 types for most units, an economy which looks fine in the dark for around $40-$75 US Dollars & a brighter, longer lasting lamp for $80-$120. I have rebuilt over 200 lamps using his lamps with good results.
WARNING: DLP/LCD projectors use PULSE START LAMPS that put out around 4,000-6,000 VOLTS DC that will kill you fast!! Never touch wires until after lamp has started & is running for few minutes then voltage settles down to 70-100 volts to measure.
Good luck & have fun!!
Voltage kills, I think that is or at least should be common knowledge to anyone attempting this kind of retrofit.
The beauty of the retrofit is this though. Once you have successfully tricked the projector into thinking the lamp is on, when you power it down next you remove the nasty little ballast thats gonna pump out that crazy current and then you throw the bastard away.
That way you just get away with having to deal with 110v. As for bulbs that cost between $40-$120..... I'll stick with my $7-$12 lamps. Undervolt it a bit and you get great life out of it.
The beauty of the retrofit is this though. Once you have successfully tricked the projector into thinking the lamp is on, when you power it down next you remove the nasty little ballast thats gonna pump out that crazy current and then you throw the bastard away.
That way you just get away with having to deal with 110v. As for bulbs that cost between $40-$120..... I'll stick with my $7-$12 lamps. Undervolt it a bit and you get great life out of it.
Do you have to use the reflector that came with the projector or can you use any type of reflector. Im relamping an infocus LP350 (DLP) and am researching what i need. ATM im quite confident ill buy the 150W MH bulb, ballast and reflector found here: http://pjoz.com/pjoz/lamps.htm but im not sure if it'll work well. Any other suggestions?
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