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10.
Remove Q5’s mounting screw carefully in order to keep its insulator in place.
Place Q19’s mounting leads into their PCB holes. Re-insert Q5’s mounting screw
thru Q19’s tab, the body of Q5, and into the heatsink. Slowly tighten the screw as
you push Q19’s body to lay flat on Q5. The idea is that we want Q19 to be a good
sensor of Q5’s temperature. Tighten the mounting screw that holds Q19 and Q5 to
the heatsink. Solder Q19’s leads to the PCB.
You have just completed the first of two amplifier modules. Return to the beginning of
Section 3: Assembling the Amplifier Circuit Boards to repeat the process to build the
amplifier module for the second channel.
Figure 26-first amplifier channel completed and installed
Repeat the method as outlined above to attach the second amplifier circuit board and
output devices to the large heatsink, beside the first amplifier. Figure 29 shows you how
the result will look.
