Tektronix SG503 Repair and Modification
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Tektronix AFG5101 Function Generator Repair
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Tektronix 485 Repair No Power
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#1758 Tektronix SG503 250 MHz Leveled Sinewave Generator
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Tektronix SG5030 Levelled Sinewave Generator Repair
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Tektronix Oscilloscope 1GHz Upgrade Hack
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Another cheap scope: $18, shipped! (FNIRSI DSO152)
25:11
Tektronix TDS600/700 Scope PSU Repair
55:09