Need some advice. Assembled board and had no troubles. Rechecked polarity of LED’s and capacitors. All looked good. Plugged board in and POWER LED lit up. However, with STANDBY Switch in STANDBY, the ON LED was lit. Taking the STANDBY Switch to ON, the ON LED goes out. Seems backward, but this switch has no polarity. No sounds coming from speaker at all. Not sure where to go next.
Also, what Ohm speaker is okay to use with this?
What are you using for a power supply?
Voltage?
Current rating?
12 V DC, 1 A.
Power light going out would indicate your power supply isn’t able to provide enough current. The kit outputs 75ish watts of power, you’re only supplying it with 12 watts.
You’re going to need a bigger power supply, I’d recommend a laptop power supply that outputs 19-20 volts at 3-4 amps. In a pinch, a car battery would work too, or a 12 volt power supply that outputs 7 or more amps.
I will definitely give the higher power supply a shot. Still confused though. The Power LED light never goes out. It is the On LED which is on when the Standby Switch is in Standby, but off when the Standby Switch goes to On. That is backwards action from the reaction described by the directions included in the kit.
Happy ending. Upped power supply as YellowDog suggested. Found poor solder connection on capacitor. Discovered Standby switch does indeed work backwards from the artwork printed on the circuit board. Standby is on and On is standby. Amplifier worked fine.