Yamaha Rx-a2a Service Manual [top]

: Complete circuit diagrams for the amplifier, video, and control boards.

The Aventage line includes a silent cooling fan. The manual shows the thermistor locations and fan control logic, allowing you to test if the fan motor is failing or if a thermal sensor is faulty. yamaha rx-a2a service manual

Using a multimeter and the PCB Layout Diagram , locate test points designated TP_FL_IN and TP_FL_OUT . The manual specifies expected voltages (e.g., 0V DC ± 10mV at idle). If you measure +35V DC, the amplifier has a shorted transistor. : Complete circuit diagrams for the amplifier, video,

Always verify the model number printed on the PCB (e.g., “YC555A0” for RX-A2A Main board). “YC555A0” for RX-A2A Main board).