Main PCB assembly
1.
Solder the diodes and all resistors. Watch the polarity of the diodes.
2.
Solder the IC socket
3.
Solder the non elecrolytic capacitor
4.
Solder the BC557
–
watch the polarity!
5.
Solder the box power header. Make sure the notch lines up with the screenprint
legend. If in doubt, have a look at a power cable, and make sure when inserted into
the header the red stripe lines up with the -12V screenprint.
6.
Solder all electrolytic capacitors
7.
Cut male headers to size and solder them into place. Make sure that they stick out of
the bottom of the PCB.