Halogen Work Light Projector Mod V2.0





Introduction: Halogen Work Light Projector Mod V2.0

Out Dated Mod:

The projector mods I did are out dated at this time. There are projectors with much better optics, brightness and throw distances. If you looking for a long use projector, with inexpensive bulbs, like I was when doing this mod, I would suggest getting an LED based projector. They provide superior brightness, rich colors, and most of all ridiculous long life spans over using a bulb based projector. Most of all there very inexpensive. Seriously Check out Amazon for LED Projectors. Just remember to find the Native Resolution, Brightness, Inputs and check the user reviews before making your purchase.

Considering what you can get NEW and at a reasonable price, modding is just not worth it.

A Home Theater that won't brake the bank.

Simply use a burnt out projector and a Work Light from Home Depot and bring the theater home!

The OEM replacement bulb for my projector cost $300 (!) , more than what I paid for the projector it self. Also, my power supply that powered the original bulb was almost toast. Using this guide, you can use a Halogen Work Light bulb for about $10 dollars.

If you like this mod please Digg It!

This project is a redo of my Automotive Head Light Projector Mod

WARNING: This mod involves modification of a projector, electrical wires, switches and a high power bulb. If you are not comfortable with modding on this level, DO NOT attempt this mod. The writer is not responsible for any injuries or damages resulting from these instructions.

Step 1: Obtaining the Work Light

'Step 1: Go to HOME DEPOT'
In their Electrical Section you will find a small ~$10 250 Watt Halogen Work Light
Make sure that the bulb is 3.15 inches NOT a 4.69 inch or it may not fit.
You will want to measure the space that you have in your projector before going to the store.

You can get 3.15 inch bulbs that go from 75 to 400 watts in 3.15 inch. However, remember that even though more watts means more lumens, it also means more heat.
(We don't want to melt the projector or start a fire)

Once you have found the bulb that will fit your projector, Buy it and continue to step 2. ------->

Step 2: Taking Things Apart : )

Now that we have the work light take it apart!
The nice thing about the work light is that it contains all the things we need to build this mod. A halogen bulb, a bulb socket, switch, and a power cord. The only thing you need are tools (a screwdriver, pliers, drill & bits) and wire nuts.

Disassembly is easy, as the light comes only partially assembled.
All screws used a Phillips driver, and to remove the clear wire nut crimps just pinch them on the sides with some pliers.

There are four parts we will need. The Halogen Bulb, the Bulb socket, switch, and power cord.

Put the light casing back in the box for your next project.

Step 3: Mounting the Switch

Drill a hole in your projector where you have room for the switch, wire and nuts underneath.
On my projector about 2 inches from the bulb socket worked well.

Unscrew the red switch and mount it in the casing. (See picture)

Step 4: Add POWER!

Drill another hole for the power cord. Push the power cord through the hole and secure it with a zip tie.

Step 5: Wire the Switch and the Bulb Socket.

Wire the switch, power cord and bulb socket. You should know that in building wiring Black = Hot, White = Neutral, and Green = Ground.

Wire the switch through the hot wire, and the bulb socket white to white and black to the switch. You can ground the Green to the ground on your projector.

If you don't know electrical wiring I suggest getting a friend to help with this project.

Step 6: Insert the Bulb and Reassemble the Projector.

Place the bulb in the bulb socket and place it directly where your original bulb would be or your automotive head light was if you completed my previous mod.

Step 7: It's SHOWTIME!

After checking all your electrical connections, Fire up your projector. Make any adjustments to the bulb placement if needed after the bulb has cooled. I can get a massive 12 Foot screen using this mod. Its much brighter than the automotive light I used last time.

Invite your friends over to the movies and show them the projector you modded.
Pop popcorn and through in one of your favorite movies.

Please check out my other projects:

Automotive Head Light Projector Mod
Upgrade from VISTA to XP

CAUTION : This Halogen bulb is MUCH HOTTER that the automotive headlight that was used last time.
You will need a significant amount of air flow through the bulb chamber to cool the bulb and NOT START A FIRE! Also, keep the bulbs power cord unplugged, you don't want someone turning on the bulb with out the fan. I am not held responsible for damages due to improper use of your projector.

My next project how to make perfect popcorn!
This popcorn popper makes great popcorn. Legend has it it was discovered abandoned in a work camp on the Alaskan pipeline.



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We have a be nice policy.
Please be positive and constructive.




Not to hard to figure out all he did was to replace the standard bulb with a halogen lamp, thats already wired, then he drills a hole in the side of the projector casing instead of trying to wire it up direct to the projector power supply. Then he actually has two seperate switches one for the light and one for the projector. The thing to note is the fact that he cautioned the need to have extra cooling such as a larger fan. Its really all simple reverse engineering and running the existing wires from the halogen light to the original wire as in piggy backed lol. As far as the projector cooling time it should still be automatic he didnt change the circuit all he did was add a stronger light. To be positive on this the bulb doesnt cost an arm and a leg to get and all the wire and circuit you need are already there. BE NICE he did explain you would need to find one that will fit your projector.

most projectors have an auto-shutoff if there is no current running through the bulb. This would have to be bypassed to make it work somehow. There is more to it than just powering the projector and bulb separately. As nearly every other post here points out....

hi,  I am geared up and ready to do this instructable, I am quite exited and cant wait to pop some corn and have a movie night,  I am having a problem though that maybe you can help me with.

I am using an acer pd100 projector, but it does not power up unless there is a working bulb in it, now I have to trick it into thinking that there is a bulb in by using a resistor but i have no clue wich one to use.

I have looked up the bulb  but cant seem to find how much power it uses,  that is if its 12 volt or 220 (I am in europe) 

the bulb:

any ideas as to what strength resistor I should use?

try, tricking it in the sensor circuit, not the actual power circuit for the lamp.
I first removed the HV flyback trafo, and tried that way on my new benq :)
It did not work, and i had the same problem as you do, then I looked at the circuit and saw that there was only the power wires and the sensor wires(the lamp HV pcb is seperate from the rest. the sensor circuit wires had only 1,2 v dc, so i tried to conect them directly guessing that the lamp circuit works as a switch and it works . now i just need to put a stronger bulb in,this one is only 60w and maybe it wil pass in complete darknes. cheers

This is it at 2x60W , NEED MOOAR!!1!11


Hello, I was thinking about doing a project like this. I wanted to know if you have ever tried to use a high power LED instead of a halogen light? If I were to attempt this I would most likely use one that is colored bright white: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=320590927002&ssPageName=STRK:MEWAX:IT
depending on how many lumens the projector is, I will find one that matches that. Please tell me if you think this will work and feel free to add any suggestions.

Hi, later this summer I'm planning to mod a LCD projector which has no lamp. I come across this producer: http://www.hueyjann.com.tw/self_pages/en/application.html It offers high power LEDs (up to 100W), with an high CRI of 90. I'm now asking them where I can find a sample of their HPR40E-19K100NWG/CRI 90. The PSUs are easy to find on the eBay (search "100W led ac driver"). As a collimator I plan to use some short focal length fresnel lenses, which you can find for example here http://www.knightoptical.co.uk/acatalog/LensesFresnellensesStandardrange.htm If you couple two or more lenses you'll have an equivalent focal length f/n, where n is the number of lenses you used. So you can have a rather thin, but powerful, lens. Maybe you'll need a tempered glass as those lenses are made of plastics, and too much heat would melt them. The biggest problem is the heat: you have to dissipate a large amount of power, so it will be impossible to fit this setup in a lamp housing, you will need at least a heatsink coming out of the projector, maybe also a fan and/or a peltier cell. But you'll have a great light source: a LED with 90 CRI and 5800lumens. What do you think? [it would be a little pricey though...]

Viper help! I am at this stage now. but the ceramic holders of my halogen lamp are hitting the cone mirror on the heat shield. Let me guess your ceramic holders just happen to be low profile and you never had this problem.

Yes, I thought that the ceramic holders on mine were a standard size. you may have to modify how the cone mirror or reflector is mounted in order to fit everything in.

Im verry impressed that you have taken on the project keep going your almost there!


i have an optoma ezpro 585 and it seems to be the exact same projector as yours in every way except name . my bulb has maybe another 30 hours on it and i am gearing up to try this mod, i just had a quick question, how did you mount the bulb in the old bulb's place. i am guessing a few squirts from a hot glue gun wont work lol....