13. Check all the connection.
14. If all the connections checked out fine, before putting the cover back, check that the
amplifier is functioning by playing music. If the 2 red LEDs on the V2 PCB do not
light up, check and make sure the 5V wire and the Ground wire of the 5V is
connected.
15. When closing the cover, please be careful as the heatsink makes a very firm contact
with the top cover for heat dissipation, and may need a firm pressure to close the
cover.
Increase the Over Current Protection Threshold on the power supply
(3/21/2007)
As part of the V2 upgrade, identify IC3 and DZ2 on the SMPS power supply, add a 50V,
10uF (or higher rating) capacitor. The +ve pin of the capacitor should be connected to
Pin-4 of IC3, and the –ve pin of the capacitor connected to DZ2 pin closer to IC3 (see
photo below).
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