Tag Archives: eico

EICO Stereophonic Integrated Amplifier HF-81 Repair

From the late ’50s, I had this nice example of an EICO HF-81 amplifier come through my shop. These are nice little stereo amplifiers with a built-in phono pre-amp and RIAA equalization and feature about 14W of power output per … Continue reading

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DIY Replacements for Vintage Couplets and Printed Electric Circuits

Starting in the ’50s, they’d figured out how to start miniaturizing components. “Couplets” and “printed electric circuits” started showing up in equipment around then. These components were combinations of several resistors and capacitors in a single package. Like most components … Continue reading

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EICO 221 VTVM Dial Scale

In a fit of clumsiness, I sent my EICO 221 VTVM flying off my bench and it struck the ground pretty hard. Not bad for its first major accident since 1959. Everything survived…except the sensitive meter movement, which snapped a … Continue reading

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Refurbishing a Capacitance Tester

Parts Express sent me an advertisement for a $45 capacitance meter today. This actually a pretty good deal, and it’s a useful thing to have around if you’re doing electronics work. I’d probably have bought one myself, if I didn’t … Continue reading

Posted in Electronics, Radios and Tubes, Vintage | Tagged , , , , | 1 Comment