Use this troubleshooting supplement to help:
Measure DC voltage test points to identify major discrepancies and locate problem areas.
(Keep in mind that the voltage measurements will vary slightly from kit to kit. The voltages you measure should be in
the same ballpark, but do not expect to get the exact same value.)
1
2
3
4
5
Test Point
Transistor Collector
Transistor Base
Transistor Emitter
Power
LED Anode (+)
Location Description
Voltage Measurement
Your Unit’s Voltages
3.1 VDC
0.6 VDC
0.0 VDC
8.9 VDC
2 VDC
Using a volt meter, connect the ground side lead of the meter to any ground point on the pedal.
One convenient ground point would be the output jack’s ground lug. The other volt meter lead will
be used to measure DC voltage at the test points listed above and shown in the drawing on the next
page.
-
+
You must plug a guitar cable into the input jack when taking the voltage measurements
because the input jack is set up to disconnect power from the circuit when unplugged.
