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What is this IR-type-y board doing inside of my set-top-box?
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tom66:
Any info on the rest of the PCB, perhaps a label as to what it might connect to?
Pictures of the whole set-top box internals including the main board ... I used to work for a company that 'made' these, actually most of them were OEMs/3rd parties and we did our software for them, so I might recognise it.
CherryDT:
Full assembly: https://www.dropbox.com/s/4h5v4tkugyq41wu/2021-02-09%2015.17.19.jpg?dl=0
Back side of the mystery board: https://www.dropbox.com/s/4h5v4tkugyq41wu/2021-02-09%2015.17.19.jpg?dl=0
Main board: https://www.dropbox.com/s/xnvaykt8y193fi8/2021-02-09%2015.20.51.jpg?dl=0
Connector (it just says CN15): https://www.dropbox.com/s/xnvaykt8y193fi8/2021-02-09%2015.20.51.jpg?dl=0
Area of the board around the connector (from the other side of the shield): https://www.dropbox.com/s/63pjiluvgy25eio/2021-02-09%2015.21.36.jpg?dl=0

Also, when you disconnect most of the stuff from the main board incl. the harddisk and attempt to start it, you get a screen that says DIGITAL RECEIVER LOADER - ADB 1.2.60F-A03-0X71DD L.1 B.7102.9206 - PLEASE WAIT - SOFTWARE UPGRADE which after a while just reboots again. Maybe this identifier tells you something... Thank you!
AndyC_772:
I'd start with a super low tech approach to seeing what it's doing.

Cover it with duct tape and see what, if anything, stops working.
CherryDT:
That's a cool idea! Unfortunately I can't really do that because the device is no longer operational after I cancelled my TV contract. (I can't even access my recordings on the harddisk, which was the reason I took it apart in the first place, but unfortunately I didn't succeed with that either.)
tom66:
Definitely not one I recognise.

The SmarDTV chip is made by a prior employer, but IIRC it's just a customised Philips crypto MCU + card reader device with some Kudelski cryptography secrets on it.
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