Radio engineering U-101 does not work one channel

The Radiotehnika U101 amplifier was brought in for repair, in which one channel does not sing, and there are not enough low frequencies in the second channel. They tried to repair the amplifier on their own, the electrolytic capacitors were partially replaced, but one channel still did not make sounds. In the video I will show you how to find a malfunction, following the usual troubleshooting algorithm in sound amplifiers, but we will also encounter another malfunction that was caused just by an attempt to repair.
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