Home Forums GuitarPCB Build Support Apollo Tremolo – no effect Reply To: Apollo Tremolo – no effect

#5862
Cybercow
Moderator

fr4nck – based on your probing video, there is NOTHING happening on side A of IC1 (output stage of the circuit), but there is signal passing thru side B of IC1 (first audio stage of the circuit). That suggests either the opamp is bad – OR – something is wrong with one or more components associated with the final output stage of the circuit.