Hi all,
Like may others i bought an Infocus LP755 off ebay with no lamp. At the moment the unit does not turn on or make any sounds, nor do any of the leds light up and im hoping this is purely because it wont allow any function without the lamp. So i obviously want to bypass the safety switch preventing me from using the projector.
I've searched all over the internet and found one person who had the exact same projector. What this person did was short these two sets of two pins. The link to the comments from instructables is below. You'll see in the pics what i mean...
http://www.instructables.com/id/Head-Light...CG4ZV1YFI50YMU6
the posts are by scotttherobot.
The pics arent too good. Basically they are spring loaded, so that when you insert the lamp with its carriage, the pins are depressed and im assuming on the carriage there is some wire that closes the circuit and i suppose this tells the unit that there is a lamp and that everything can be powered on.
Now the persons description of how he shorted out the pins leaves me a little confused so i was wondering if anyone here had an idea how to fix this.
It looks a little like this.... the x is a pin...everything else is written on the board. There are also two wires going to the board.
1 x cn2 1 x cn3
2 x 2 x
Like may others i bought an Infocus LP755 off ebay with no lamp. At the moment the unit does not turn on or make any sounds, nor do any of the leds light up and im hoping this is purely because it wont allow any function without the lamp. So i obviously want to bypass the safety switch preventing me from using the projector.
I've searched all over the internet and found one person who had the exact same projector. What this person did was short these two sets of two pins. The link to the comments from instructables is below. You'll see in the pics what i mean...
http://www.instructables.com/id/Head-Light...CG4ZV1YFI50YMU6
the posts are by scotttherobot.
The pics arent too good. Basically they are spring loaded, so that when you insert the lamp with its carriage, the pins are depressed and im assuming on the carriage there is some wire that closes the circuit and i suppose this tells the unit that there is a lamp and that everything can be powered on.
Now the persons description of how he shorted out the pins leaves me a little confused so i was wondering if anyone here had an idea how to fix this.
It looks a little like this.... the x is a pin...everything else is written on the board. There are also two wires going to the board.
1 x cn2 1 x cn3
2 x 2 x
heres the link again
http://www.instructables.com/id/Head-Light-Projector-Mod-V1.2/?comments=all#CG4ZV1YFI50YMU6
basically i was wondering if i could just cut this little bit of circuitry out and join the two wires leading to it. The simplest option would be to just get some wire and go ahead shortening the pins until something happens...but then i dont want to kill the ballast...or do i? I plan on inserting a 150W MH bulb with its own ballast and a fan or two to keep the whole thing cool since there isnt any fan there to begin with. I might add that the original bulb was a 120W UHP.
So another question is do i want to kill the ballast. Does frying the ballast mean burning the power supply, rendering the projector useless? Or can i let the ballast burn out without it having any effect on the operation of the projector? My guess is that i should put a resistor in the lamps place...any ideas as to what size?
http://www.instructables.com/id/Head-Light-Projector-Mod-V1.2/?comments=all#CG4ZV1YFI50YMU6
basically i was wondering if i could just cut this little bit of circuitry out and join the two wires leading to it. The simplest option would be to just get some wire and go ahead shortening the pins until something happens...but then i dont want to kill the ballast...or do i? I plan on inserting a 150W MH bulb with its own ballast and a fan or two to keep the whole thing cool since there isnt any fan there to begin with. I might add that the original bulb was a 120W UHP.
So another question is do i want to kill the ballast. Does frying the ballast mean burning the power supply, rendering the projector useless? Or can i let the ballast burn out without it having any effect on the operation of the projector? My guess is that i should put a resistor in the lamps place...any ideas as to what size?
Bugger to all that above... I managed to pull apart the power supply, which is an astec aa20440. Found a couple of burnt resistors and such. This is far beyond anything i could possibly even attempt to fix. So the question now is...is there anyone in sydney that could fix it for me? I'd pay of course. Or know of any places that could fix it for me?
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