Uploaded October 2022 | Updated September 2026, 1 week ago

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What's inside a video doorbell intercom with a flat CRT screen from 2003. A flat display technology before LCD's. Warning: don't do what you see in this video. Risk of electric shock or injury.

The next episode - in operation, experiments, waveforms:
youtu.be/l9CXZXSwG7I

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