[Ritualknive]

Just put together one of these. Mic and line work well along with the phantom power. DI all I hear is hiss and the front LED doesn’t work either. Any ideas? Thanks! 

[JPK]

Can you report the DC voltages on each pin of U2 on the DI board?

[Ritualknive]

1. -15.34
2. -15.72
3. -16
4. -16

5. -14.4 but can here relay switch then 3.77
6. -14.4
7. -13.6
8. 15.8

That’s with nothing plugged into DI

[JPK]

Check that diodes D12 and D13 are installed in the correct orientation: The "k" on the PCB is the ring on the diode.

[Ritualknive]

They are in correctly. Maybe one of them is no good? Also I’m also now noticing when using the mic/line in the 1200 ohm position there is a constant tapping or ticking type of sound. Only on the 1200 setting. 

[JPK]

Not good! Pins 1, 2, 3, 6 shoulb be at 0V.
Check the solder joints on J4a-J4b.
Look for a solder bridge on U2, on the jack or on the connectors J4a-J4b.


Maybe one of them is no good?
You can check them in circuit with your DMM in diode test mode.