Quad 34 Repairs Part 1
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Quad 34 repairs ... where's my missing channel?
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Amstrad CPC 464 Part 2
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QUAD - The Crème de la Crème of Audio - Can I FIX it?
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Electronics components Testing Part 1
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Repairing slow updates on a HP 8591A Spectrum Analyzer
33:37
Quad 34 Part 3 - Adding a phono stage
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How to make a simple welding machine from spark plugs at home! Extremely easy and useful
19:22