infrared thermometer - curiosity teardown and minor repair

This non-contact infrared thermometer has been bouncing around in my toolbox for a few years and needs a bit of attention.

I've always been curious about what makes this thing tick, so while I've go tit apart, let's take a look at what is in there.

Here's the sales listing (which has a link to the manual) if you are interested.
https://www.princessauto.com/en/detail/infrared-thermometer/A-p8730541e

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If you are OK with me getting a commission on your e-bay purchases, feel free to use my affiliate link: https://ebay.to/2kxTvss
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This isn't the only way to do it.
It's probably not the best way to do it.

But it's how I do it.

Видео infrared thermometer - curiosity teardown and minor repair канала pileofstuff