Hi guys.
A friend of mine gave me this MXR MC-402 boost distortion stomp-box. When I press the BOOST switch the pedal goes death silent, and that´s not supposed to happen. Blue LED comes on but no sound. When I press it again the LED goes out and sound comes back. I checked the footswitch and it works all right. There is a transistor (Q10 on the PCB, J177 P-channel switch) which checked shorted between drain and source when in the circuit but was OK once I took it out. Also there is this IC TLC2262 which tests suspicious while in the circuit... I haven´t taken it out jet because with this type of circuit assembly, experience tells me that this is a pita.
Any thoughts?
Thanks in advance
A friend of mine gave me this MXR MC-402 boost distortion stomp-box. When I press the BOOST switch the pedal goes death silent, and that´s not supposed to happen. Blue LED comes on but no sound. When I press it again the LED goes out and sound comes back. I checked the footswitch and it works all right. There is a transistor (Q10 on the PCB, J177 P-channel switch) which checked shorted between drain and source when in the circuit but was OK once I took it out. Also there is this IC TLC2262 which tests suspicious while in the circuit... I haven´t taken it out jet because with this type of circuit assembly, experience tells me that this is a pita.
Any thoughts?
Thanks in advance