Yamaha Rx-a2a Service Manual ((exclusive))

As he scrolled, the manual revealed the hidden geography of the machine. He saw the "Aventage" philosophy laid bare in technical ink—the fifth foot (A.R.T. Wedge) designed to dampen vibrations, described in the manual not as a feature, but as a mechanical necessity for purity.

The manual guides you to measure the voltage across the emitter resistors of the output transistors. If DC voltage is bleeding into the speaker terminals, a transistor has likely short-circuited. yamaha rx-a2a service manual