Salvaging the Fresnel Lens From a Rear Projection TV





Introduction: Salvaging the Fresnel Lens From a Rear Projection TV

I was thinking of DrSimons awesome instructable the other day when i spotted a discarded TV on the road side.  
Since it was garbage day, and my wife stated in no uncertain terms that it had to go "that day", I decided to make a quick video on how to get the screen out. I also salvaged a nice first surface mirror form the cabinet for a never to be made future laser instructable.

So enjoy this brief video of me looking disheveled and fat as I rush to disassemble the TV before the garbage truck comes.



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I myself look for them and turn them into puppet theater for kids.

It's a good project to do. The hard part is gutting them out.

You make it look so easy. Then again I'm not using a power tool.

After its gutted out I add fabric and some curtains

Then I put it on craigslist and cash in.

I have sold them for as much as $200 But maybe I should not tell people that. Lol

It started as something to do with my kids. I did not take any pictures of mine which came out a lot nicer then this one found on line.

It goes to show I'm not the only one doing them.

So keep in mind what you can do with the box after you gut it.

I was wondering about the liquid inside the lens.

Someone said it is deadly if mixed with water.

Is their any truth to this.

Thanks for your video. Live and learn


It's generally mineral oil, used for cooling.

Do all rear projection tv’s have a fresnel lens in them. Or do more recent ones utilise a different type of lens? If so, ideally how old a tv should still contain the fresnel lenses.

This is very useful. It doesn't look nearly as difficult as I thought. I wouldn't want to lug the whole TV home but it looks easy enough to remove the lens 'in place'. As long as you put things back, minus the lens, who would mind?

I just salvaged one from out front Some guy came down our street and dumped it off in front of our house. I wonder if any use can be made with the three lenses?

Would a 15-20 inch fresnel lens be effective for a cardboard solar oven? (painted black, insulated, etc.)

I can't believe it... I had the chance to salvage a huge one, I mean like the double of the one of the video! If I only had known at the time... agh! Imagine how powerful it could have been...