Infocus X1/X2 Lamp & Ballast Bypass

crazifunguy · 22nd August 2008, 12:04 AM

I just picked up a cheap Infocus X2 projector that I want to mod and play with alternative light sources. I have the projector apart and I have taken some voltage measurements. I was able to find a troubleshooting guide but no schematics were included just connections.

2 of those connections got my attention.
Lamp Enable
Lamp Lit

After doing some testing I find that when there is no bulb the voltages are as follows
Lamp Enable -2.11v
Lamp Lit .95v

When the bulb is inserted and powers on
Lamp Enable 1.07v
Lamp Lit 4.04v

I tried unplugging those 2 leads. When the Lamp Enable is dissconected the projector will act like there is no blub. When the Lamp Lit is dissconected the projector will not function at all. I am guessing that the Lamp Lit is the bypass but it seems that I need to feed this 4 volts. I am going to follow the traces and see what components these connections leadto but does anyone have any ideas as to the method of bypassing this ballast?
Pic from the repair manual.

crazifunguy · 23rd August 2008, 04:08 AM

Well after some following of the circuits and some testing with my meter I found that that pinout was way off. I must have a newer revision. It ended up being pin 14 through a 10ohm resistor to ground lets the projector turn on and stay on. Now I need to pick a lamp source to play with. LET THE FUN BEGIN!!!!

rhh1095 · 1st October 2008, 05:24 AM

I would love to find a cheaper alternative to the Hg-Vapor lamps used by InFocus. Does anyone know where you can purchase the bulb so I can relamp the housing I have?

The house is shown here.

mbates14 · 28th October 2008, 12:56 AM

ywh....

crazifunguy · 28th October 2008, 05:36 PM

I have had very good results using 50W 5000k HID lamps used in auto applications. They output 4500 lumens and fit inside the stock reflector. You have to use an external ballast but the bulbs are super cheap $25 and last just about as long as a stock bulb...only downfall is the external 12V ballast.

mbates14 · 28th October 2008, 05:46 PM

and the price of those ballasts.

nightravennty · 3rd November 2008, 10:19 PM

Hello everyone.
I am having a terrible time finding just the bulb for our projector.
we have a InFocus X1
I took out the housing or ballast maybe any way i have it all open so i can remove just the bulb with the power plug........is there and way to find this part instead of buying the whole $300 housing.
we dont have that kind of money.
It completely suprised us we were sitting watching a movie and the next thing you know there is a huge BURSTING POP!!!
It was the bulb.

thank you for any help.

Natalie

bukludz · 16th November 2008, 03:52 PM

good day! pardon me witch pin 14 are you stating could you give me a pick coz I'm planning on buying an x2 model with dead buld. Thanks in advance.

bogdan100 · 20th March 2009, 11:31 PM

Please explain where is the pin 14 with the 10 ohms resitor to bypass the bulb on Infocus PJ ?

Thanks

Bogdan

crazifunguy · 21st March 2009, 03:55 AM

I will take some a picture to explain better. The lamp enable needs to be disconnected and the lamp lit needs to be grounded.

22nd August 2008, 12:04 AM	#1
crazifunguy diyAudio Member Join Date: Aug 2008	Infocus X1/X2 Lamp & Ballast Bypass I just picked up a cheap Infocus X2 projector that I want to mod and play with alternative light sources. I have the projector apart and I have taken some voltage measurements. I was able to find a troubleshooting guide but no schematics were included just connections. 2 of those connections got my attention. Lamp Enable Lamp Lit After doing some testing I find that when there is no bulb the voltages are as follows Lamp Enable -2.11v Lamp Lit .95v When the bulb is inserted and powers on Lamp Enable 1.07v Lamp Lit 4.04v I tried unplugging those 2 leads. When the Lamp Enable is dissconected the projector will act like there is no blub. When the Lamp Lit is dissconected the projector will not function at all. I am guessing that the Lamp Lit is the bypass but it seems that I need to feed this 4 volts. I am going to follow the traces and see what components these connections leadto but does anyone have any ideas as to the method of bypassing this ballast? Pic from the repair manual.

23rd August 2008, 04:08 AM	#2
crazifunguy diyAudio Member Join Date: Aug 2008	Success Well after some following of the circuits and some testing with my meter I found that that pinout was way off. I must have a newer revision. It ended up being pin 14 through a 10ohm resistor to ground lets the projector turn on and stay on. Now I need to pick a lamp source to play with. LET THE FUN BEGIN!!!!

3rd November 2008, 10:19 PM	#7
nightravennty diyAudio Member Join Date: Nov 2008	needing help finding a bulb for my InFocus X1 projector Hello everyone. I am having a terrible time finding just the bulb for our projector. we have a InFocus X1 I took out the housing or ballast maybe any way i have it all open so i can remove just the bulb with the power plug........is there and way to find this part instead of buying the whole $300 housing. we dont have that kind of money. It completely suprised us we were sitting watching a movie and the next thing you know there is a huge BURSTING POP!!! It was the bulb. thank you for any help. Natalie

20th March 2009, 11:31 PM	#9
bogdan100 diyAudio Member Join Date: Mar 2009	X1 PJ Please explain where is the pin 14 with the 10 ohms resitor to bypass the bulb on Infocus PJ ? Thanks Bogdan

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

28th October 2008, 12:56 AM	#4
mbates14 diyAudio Member Join Date: Jun 2002 Location: non	ywh....

28th October 2008, 05:36 PM	#5
crazifunguy diyAudio Member Join Date: Aug 2008	I have had very good results using 50W 5000k HID lamps used in auto applications. They output 4500 lumens and fit inside the stock reflector. You have to use an external ballast but the bulbs are super cheap $25 and last just about as long as a stock bulb...only downfall is the external 12V ballast.

28th October 2008, 05:46 PM	#6
mbates14 diyAudio Member Join Date: Jun 2002 Location: non	and the price of those ballasts.

16th November 2008, 03:52 PM	#8
bukludz diyAudio Member Join Date: Sep 2007	good day! pardon me witch pin 14 are you stating could you give me a pick coz I'm planning on buying an x2 model with dead buld. Thanks in advance.

21st March 2009, 03:55 AM	#10
crazifunguy diyAudio Member Join Date: Aug 2008	I will take some a picture to explain better. The lamp enable needs to be disconnected and the lamp lit needs to be grounded.

Currently Active Users Viewing This Thread: 2 (0 members and 2 guests)

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read