TROUBLESHOOTING
In the event that your DI-PREAMP appears not to work correctly, often enough the problem is not with the PREAMP-DI, but a related
piece of equipment that it’s necessary to take a deliberate, systematic approach to troubleshooting in order to effectively identify and
correct the problem. Yes, believe it or not, we have seen all of these things (and more) many times.
SYMPTOM
NO AUDIO OUTPUT
Is the power LED lit?
NO: Possible causes to check in this order are:
1. Verify that the power source is good (if using an external AC powered power supply).
2. If you are using an external supply, verify that it’s the correct voltage and polarity and that it’s actually plugged into the power
source. Also check to be sure it is functioning correctly.
3. If you are using the internal battery, be sure that it is a good battery (i.e. fully charged) and that it’s actually present (yes, this
really does happen)
4. Verify that the input cable you are using is a standard ¼” (6.3mm) TIP-SLEEVE type. TIP-RING-SLEEVE type cables may fail to
turn the unit on under conditions where the ring floats or is not solidly connected to sleeve at the other end.
5. If these do not solve your problem, it’s possible that your DI-PREAMP has failed. Call our Customer Service department and we
will help you get this resolved.
YES: Possible causes to check in this order are:
1. GAIN and MASTER VOLUME controls must be turned up for the PREAMP OUTPUTS to work.
2. When using the PREAMP OUTPUTS with an external power amp, the power amp’s input sensitivity controls must be turned up.
3. Defective pickup or cable (test with known good pickup and cable)
4. Defective cable to the external device, or defective external device (i.e. console, recording interface)
5. There is indeed a problem with your DI-PREAMP. Call our Customer Service department and we will help you get this resolved.
SYMPTOM
DISTORTED AUDIO OUTPUT
1. Defective battery in active instrument causing instrument’s onboard preamp to distort (replace battery)
2. Defective battery in PREAMP-DI causing preamp’s electronics to distort (replace battery)
3. Slightly intermittent cable in some part of the system (this can be an instrument cable, patch cable or XLR cable)
4. Defective or blown speaker(s) in cabinet (test with known good cabinet, repair cabinet as needed)
5. There is indeed a problem with your DI-PREAMP. Call our Customer Service and we will help you get this resolved.
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