Pioneer A20 Amplifier Repair (With Audio Tutorial)

Описание к видео Pioneer A20 Amplifier Repair (With Audio Tutorial)

Fault
Amplifier in protection mode, power LED flashing RED.

Amplifier protection mode re-set by pressing the Direct and Speaker B push buttons together.

Voltage on the output of regulators IC93 and IC94, IC94 low at minus 8.2 volts confirming failure.

Both regulators replaced fixing the issue.

Bias for each channel set to 10 millivolts.

Amplifier fully tested working correctly.

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