Test The New Power Supply; Section 4: Building The Stereo Amplifier Module; Figure 6-Grounding Arrangement For Speaker Common Connections On The Sca-80 - DYNACO PWRAMP80 Assembly Manual

Figure 6-Grounding arrangement for speaker common connections on the SCA-80

Test the New Power Supply

Take a minute to clean up your work area before proceeding. Get a DC voltmeter ready
to perform the following test:
1. Tape off the end of the yellow RLYDRV wire.
2. Turn the power switch off.
3. Plug in the amplifier.
4. Stand at arm's length from the amplifier and turn on the power switch. This arm's
length direction is for your safety. If you've connected C9 or the diodes
backwards, there could be a pop and a bang, and the insides of a capacitor could
come hurtling out of the capacitor. Watch for smoke. If no smoke, then check the
voltage across C9. It should be about 75 Volts.
5. Turn off the amplifier.
6. Unplug the amplifier.

Section 4: Building the Stereo Amplifier Module

Building the Stereo Amplifier Module proceeds along the same lines as the power supply
you built in the previous section. Carefully pour all the components from the Amplifier
Module Envelope into your soup bowl. Track your progress by placing a check-mark in
the done column as you install each component. As before, we begin with resistor
installation.
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