How do I start debugging this circuit?
Where to start?


Your input signal is being applied to pin 4 which should be 0V
Your speaker is connected between \$V_{OUT}\$ &amp; Gain instead of between \$V_{OUT}\$ &amp; 0V
Both inverting &amp; non-inverting inputs (pins 2 &amp; 3) are connected to 0V
Bypass (Pin 7) is connected directly to 0V instead of through a capacitor (as per the data sheet)


The schematic is clearly wrong. Where did you get the kit from?