Refurbishing a Tektronix TDS7104 Oscilloscope

The author purchased a Tektronix TDS7104 oscilloscope at a flea market for $300 and discovered it had a failed CMOS battery causing boot errors, prompting a comprehensive refurbishment project. The TDS7104 is a high-performance 4-channel, 1 GHz bandwidth oscilloscope from the early 2000s that runs Windows 2000 Pro and features professional-grade specifications exceeding modern hobbyist-class instruments. The blog post documents the step-by-step process of restoring the scope to working condition, including battery replacement, driver installation, and firmware updates.