My TEKTRONIX 475 Oscilloscope serial no. 705250 comes from a business I made with a friend back in 1998.

It works fine but I had to fix some minor problem to maintain it in working conditions.

Here are the repair briefs:

• An experience fixing the vertical position pots

• An experience fixing the ch1 vertical input of a Tektronix 475 oscilloscope

• Fixing the low voltage power supply

• Fixing the slope +- switch

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