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.
The TV is a Sony KP-43T85T or similar. The service manual is here with on page 55 the exact part: https://www.manualslib.com/manual/772761/Sony-Kp-43t85t.html?page=55#manual
It states “3D COMB FILTER” and is part of the picture in picture mode. It’s probably an optional upgrade, which is why it’s on a separate board if I were to guess.
Looking up 3D comb filters, I found this:
https://www.edn.com/revisiting-the-analogue-video-decoder-brushing-up-on-your-comb-filters/
My guess is this is a CRT TV, and these sensors precisely measure the timing of the scan line in the overscan regions (off the sides of the display), and allow the TV to make adjustments.
Awesome!
I found manuals of a similar product, but it did not have the correct labels, may have been a different brand or older models.
I give you props on finding the part!
Is there a reason you took your TV or are you just doing meth?
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.
IR receivers for the remote
Why would you need more than one IR receiver for a remote control?
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…