I feel like they probably have something to do with light level detection or infrared signal receiving but I genuinely have no idea. They could just as likely be part of the sound system for all I know.

  • lemming741@lemmy.world
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    9 months ago

    Those are sensors for the auto-registration. It flashes a pattern for each color tube and aligns them.

  • ch00f@lemmy.world
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    9 months ago

    Other thoughts: S3001 implies that it’s some kind of switch (also present is D3001 and CN3001 for diode and connector).

    One thought is reed switch? Maybe it’s not optical at all. Were there any magnets near this sensor inside the TV? Maybe it’s a way to determine that the screen is fully mounted/aligned correctly?

  • ch00f@lemmy.world
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    9 months ago

    What kind of projection? DLP? LCD?

    What’s confusing to me is the diode. It almost looks like a freewheeling diode for an inductive load, but I can’t imagine what that would be.

    Could also be ESD protection, but I wouldn’t expect a large IR photodiode to need much ESD protection.

    Also if it’s truly a passive component like a receiver, I’m surprised there isn’t any local components for filtering or amplification.

  • jimmydoreisalefty@lemmy.world
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    9 months ago

    IMO It would be helpful if you provide more information on the product number/model of projection TV you took apart, if you have such information.

    It may help people find repair/service manuals or schematics of parts…

    • federalreverse-old@feddit.de
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      9 months ago

      Is there a reason you’re being disrespectful? If someone lines up parts of their TV like op did for the picture in this post, they are probably not on drugs right now.

    • AFaithfulNihilist@lemmy.worldOP
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      9 months ago

      There are a lot of really useful components in there that I already understand. The speakers, the lenses, even the cooling oil used on the projector tubes can be repurposed.

      I use the actual shell of the TV as a rolling cabinet since the wheels are still in great shape. I’m working on a water heater to take advantage of the massive fresnel lens. There was a great deal of junk in there though.