Troubleshooting And Technical Support - Ada MP-1-CHANNEL User Manual

6. Note the tube nearest the edge of the front of the enclosure is the first stage of the
MP‐1‐CHANNEL circuit and is the most critical tube for minimizing noise and
microphonics. The first triode stage is pins 7, 8, 9 of the 12AX7.
7. When reassembling the enclosure, do not over tighten the screws.
8. If there is hum in the audio signal, check the rear panel screw with the lock washer
for proper tightness so the lock washer makes electrical contact with the enclosure.
9. Use only high quality, low‐noise 12AX7s.
TROUBLE‐SHOOTING & TECHNICAL SUPPORT
1. What are some quick tests to troubleshoot my unit?
Sometimes a few quick tests at home can be the difference between thinking your unit is
broken and getting it working properly. Here is a list of quick trouble‐shooting steps to test
your gear and unit. As basic as these sound please run all the tests.
a. Check simple signal chain: Plug your cable from your guitar into your amp. If you
have a direct connect tone go to step 2. If not you have a bad cable, guitar or amp.
b. Check 2nd cable: Take your #2 cable and switch it with the first cable. If you have
sound, we now know both cables, your guitar and amp, work.
c. Check power: Plug your amp into the same outlet that you're using to power your
ADA product. If the amp turns on, then the outlet works. If not try another outlet to
power your unit.
d. Check native ADA Signal Chain: Plug the #1 cable from your guitar into your ADA
product (input). Plug the #2 cable between your ADA product (output) and into
your amp. Make sure the ADA is plugged into a working power source. DO NOT
insert it in a pedal chain, i.e., do not introduce any other pedals into the signal
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