Do not put any of the pots or switches in at this time. Put the panel
aside and continue with the PCB.
PCB Bottom Side
Solder the bottom side components as described below. If polarity
matters, it means you need to pay attention which way you solder the
components to the PCB or panel. Diodes have a black line on them which
needs to match the line on the PCB. Electrolytic capacitors have a
short leg that goes on the minus (“-”) side, and they’re also marked
with a printed stripe on this side. The IC has a dot that must match
the notch in the socket. And this in turn should match the gap on the
PCB.
Double check the polarity! If the IC is flipped, you will see the
infamous magic smoke and likely destroy the IC and potentially your
PSU!
(D are diodes, R are resistors, C are capacitors, U are the
potentiometers as well as the IC and its DIP8 socket, S are switches
and LED are, you might have guessed it, LEDs.)
