SB2 troubleshooting

If the output of your SB2 is uneven between channels, check the following:

1. Are the dots on the resistors arrays lined up with the corresponding dots on the circuit board?
2. Are both resistors R5 and R6 soldered well?
3. If you have a multi-meter you can check your build by confirming the resistance between the points in this chart: SB2 Resistance Testing Values (Google Sheets).