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Upgrading Sony's Grail CRT -The KV-27FV310 RGB Mod

Retro Tech 28 min Published Aug 2026

About this video

RGB input is added to a Sony KV-27FV310 NTSC Trinitron to lift its picture quality, and the maker lists the soldering irons used.

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. Soldering brings burns, fumes and lead.

Why watch it

The work is specific to one model, the KV-27FV310, so check your set's model number first. Tape, adhesive and silicone are listed for refitting inside the case.

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