Over the last few days we built two SEX amps. One of which is not passing the voltage tests. The voltages on their respective terminals are as follows:
2. -38.7 16. 1 H2,H5. -3
3. -7.6 17. 0 H4,H7. 3
4,5. 0 18. 0.6
6. -183 19. 0
7. -191.7 20. 1
10. -182.5 21. -201
Solder joints seem to be ok, but there could be a cold solder hiding somewhere or a mis-wire that i missed. Is there a place that I should look to narrow down my search, or could there be another issue?