Tag Archives: TA-4650

VD-1221 Replacement Substitute Diodes

Posted on November 25, 2014 by jwk

We’re lucky that these days you don’t need to stock very many diodes in the parts drawers for refurbishing most vintage gear – pretty much everything except for the main power supply rectifiers can usually be replaced with some combination … Continue reading →

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Sony TA-4650 VFET Stereo Amplifier Inspection and Upgrade

Posted on November 11, 2014 by jwk

This Sony TA-4650 was shipped to me from Canada for a shop visit on its way to its ultimate owner in California, who just bought it on eBay. He had it sent to my shop for an inspection and a … Continue reading →

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Sony TA-4650 VFET Stereo Integrated Amplifier Check-Up

Posted on September 24, 2014 by jwk

This repair cross-posted from Rain City Audio: I recently had this Sony TA-4650 in the shop for a check-up. It was reportedly giving static in one channel. That’s trouble on an amp like this – Sony used an ambitious new technology, the VFET, a … Continue reading →

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