Alesis PROLINEAR 720 DSP - Page 50

AS1/AS3 POWER AMP MUTE NOISE FIX
Additional parts required for modification:
2 1-02-0104 CAP 0.1uF CERDISC 10% 50V
1 1-56-0104 CAP 0.1uF X7R 0805 10% 50V
Procedures:
1) Solder one 0805 0.1uF capacitor (1-56-0104) across the base and emitter pins
of Q3 (see Figure 1 for details).
Figure 1
2) Solder one thru-hole 0.1uF ceramic capacitor between jumpers J115 (mute pin
of U3) and J117 (GND). See Figure 2 for details.
3) Solder one thru-hole 0.1uF ceramic capacitor between jumpers J111 (mute pin
of U2) and J117 (GND). See Figure 2 for details.