Recapped a 1988 Sony Trinitron, now it sounds like an AM radio through my speakers | Retro Tech Resurrections

Uma Mitchell · 2026-09-04T19:05:03.373419+00:00

Used to just swap caps and call it done, but after last month's fix on a KV-27TS27, the flyback whine bled into the audio line, so now I run every set through a $15 isolation transformer before I even test it, has anyone else hit this ground loop trap?

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Recapped a 1988 Sony Trinitron, now it sounds like an AM radio through my speakers | Retro Tech Resurrections - The Community Guide