Disclaimer: Repairing mains-powered audio equipment involves dealing with high-voltage capacitors that can hold a lethal charge even when unplugged. Always discharge capacitors before working on a circuit and proceed at your own risk.
: A step-down transformer converts mains voltage to a lower AC voltage, which is then rectified and filtered by large capacitors on the mainboard. Amplifier Stages creative a220 circuit diagram patched
# Voltage-Controlled Amplifier (VCA) R4 15 16 10k U4 16 17 vca creative a220 circuit diagram patched