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Harman Kardon PM665 Repair & Restore - Part 1
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Pojacalo harman kardon (Protection mode---repair) - Popravka
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Fisher 800-B Part 2 - Bias Supply and Feedback Circuit
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Harman Kardon PM665 Part 2 - Input Phono & Driver Boards
7:38
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Harman Kardon hk870 Power Amplifier Repairs (Ep. 233)
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Troubleshooting Distortion Problems with Rotel RA-1412
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