Concrete Distortion Building Instructions v1.0
7
Troubleshooting
All PCB’s have been e-tested 100% in the factory, so there should not be a connection problem on
the PCB itself.
The board is not working (at all), what now?
Check if your 9V is plugged in correctly (and/or soldered correctly on the board).
Check that you oriented the capacitors, IC’s ,transistors and diodes the right way. MKT
capacitors and resistors do not need to be oriented.
Check if you used the correct values of the components. For resistors you can look here:
http://www.diyaudioandvideo.com/Electronics/Color/
Double and triple check your soldering! A lose or cold solder can be really bad for your board.
Replace the IC’s and transistors, one might be defective. Before doing that first unplug the 9V
and wait 5 seconds.
Check that you have good/high grade components. A lot of Chinese sourced parts are fakes
(especially high end opamps) so be careful that you source your parts from reliable suppliers.
Inside Layout
