Today, let's try to fix a TR-0458/B function generator made in Hungary probably in the early 1980s. This is a 0.0001Hz to 1MHz function generator (sine wave, square wave, triangle wave, sawtooth) with 58 transistors and 4 OpAmps. Finding the faulty component, aligning it, the schematic, how does it work.

The schematic:
http://www.blunk-electronic.de/datash...

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