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How to Test & Rejuvenate a Sony Trinitron CRT

Retro Tech 28 min Published Mar 2026

About this video

Poor colour and white balance persist on a rebuilt Sony PVM 20M2MDU Trinitron, so the channel tests the tube with a B&K Precision 467 analyser and then rejuvenates it.

Good to know: The tube and flyback hold a high voltage charge after unplugging. A knocked or cracked tube can implode, so protect your eyes and never lift it by the neck. Mains voltage inside.

Why watch it

Anyone wondering when to stop replacing parts and test the tube will see a case where a full rebuild left colour and white balance wrong. Chapter times are listed.

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