2
Before we get started with the troubleshooting, the two most common issues that cause trouble with the
Quaverato kit builds are 1) bad solder joints and 2) the jumpers not being properly soldered. There’s
not much that can be done about bad solder joints until you track them down, but if the tremolo effect
isn’t working at all (the pedal is just acting as a boost) chances are that you soldered the jumpers
incorrectly. Check page 48 of the assembly manual.
Now on to the troubleshooting...
1. Does the power LED come on? If not...
A. Check for voltage on any of the 9V (green) points (see PCB voltage graphic).
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Are you using the proper polarity, voltage, and current rating power supply? It should be
9Vdc able to supply 100mA of current. The center of the barrel jack should be negative
(as with most pedal power supplies).
B. Is the power LED in the correct orientation?
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Check this with your meter’s diode tester. With the red probe on the LED’s square pad
and the black probe on the round pad, the meter should read around 1.7V (which is
the forward voltage drop of the LED). If it reads around 1.5V then reverse the probes
and check again. If when reversing the leads (red on round, black on square) it gives a
reading of 1.7V, it means the LED is in backwards.
2. Does the tap tempo LED turn on? If not...
A. Check for voltage on any of the 5V (red) points (see PCB voltage graphic).
B. Is the microcontroller firmly seated in the socket in it’s proper orientation?
C. Is the tap LED in the correct orientation?
•
Check this with your meter’s diode tester. With the red probe on the LED’s square
pad and the black probe on the round pad, the meter should read around 1.8V
(which is the forward voltage drop of the LED). If it reads around 1.5V then
reverse the probes and check again. If when reversing the leads (red on round,
black on square) it gives a reading of 1.8V, it means the LED is in backwards.
3. Can you tap a tempo on the tap time foot switch? If not...
A. Set the DEPTH knob fully clockwise, set the MULTIPLIER knob on 1:1, set the WAVE SHAPE
knob fully counter clockwise (on sine wave).
B. Is the tap LED flashing the 2-4-2 code (or something similar) and not responding to tapping the
foot switch? This is showing the software version number (2.4.2). When the tap foot switch is
held down on power up, the pedal enters this mode to display the software version number.
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