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Hey all,
Looking for some help diagnosing this chorus pedal that won't sweep. I've narrowed it down to a lack of clock signal for the BBD (MN3002), but I can't seem to get the flip flop (CD4013) to generate the clock signal.
The LFO is working as expected, I've attached the full schematic as well as the subcircuit that is the problem area and the corresponding voltages (AC in green, DC in red). Note that all measurements were taken with Intensity (Depth, on the schematic) and Speed at maximum.
Both NPN and PNP transistors that drive the CD4013 have been replaced, as have the electrolytic caps in this section of the circuit.
If anyone has any ideas it would be greatly appreciated, thanks in advance!
Looking for some help diagnosing this chorus pedal that won't sweep. I've narrowed it down to a lack of clock signal for the BBD (MN3002), but I can't seem to get the flip flop (CD4013) to generate the clock signal.
The LFO is working as expected, I've attached the full schematic as well as the subcircuit that is the problem area and the corresponding voltages (AC in green, DC in red). Note that all measurements were taken with Intensity (Depth, on the schematic) and Speed at maximum.
Both NPN and PNP transistors that drive the CD4013 have been replaced, as have the electrolytic caps in this section of the circuit.
If anyone has any ideas it would be greatly appreciated, thanks in advance!
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