Here is something interesting.
Yamaha A520 involves a classic RF Toko style transformer somewhere in the feedback and the bias Even though these transformers are adjustable nothing is written in the service manual about the procedure or the need of adjustment
Any bode cares to take a quick look at the schematic and explain ?
here is a snapshot of the detail and the complete schematic
Yamaha A-520 - Manual - Stereo Integrated Amplifier - HiFi Engine
Yamaha A520 involves a classic RF Toko style transformer somewhere in the feedback and the bias Even though these transformers are adjustable nothing is written in the service manual about the procedure or the need of adjustment
Any bode cares to take a quick look at the schematic and explain ?
here is a snapshot of the detail and the complete schematic
Yamaha A-520 - Manual - Stereo Integrated Amplifier - HiFi Engine