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YouTube

Heathkit Repair - Audio Generator IG-72 - Surprise Failure, Repair, and Future Proofing

Retro Tech & Electronics via YouTube

Overview

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Explore the repair process of a Heathkit IG-72 Audio Generator in this informative video. Follow along as the presenter troubleshoots an unexpected failure during testing of an IM-12 harmonic distortion meter. Learn about the weak points of the IG-72 and witness the step-by-step diagnosis leading to component modification for long-term reliability. Observe the machine work required to implement the repair and understand the reasoning behind replacing out-of-spec resistors on the selector knobs. Gain insights into the unexpected accuracy of the DB knob when evaluated using a Hantek 5072p FFT. Discover valuable techniques for restoring and future-proofing vintage test equipment in this hands-on demonstration of electronic repair and modification.

Syllabus

Heathkit Repair - Audio Generator IG-72 - Surprise failure, repair, and future proofing

Taught by

Retro Tech & Electronics

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