I bought a used DRD 3k about 8 months ago and had always used a battery because for jams I just use a Skullmaster > DRD > tuner so power cables just get in the way. Well, I plug in a 9 V adapter and the pedal won't turn on
How do I trouble shoot this? All the solder contacts seem strong and no circuit breaker switch to flip inside. Is there anything left to do/check? Do I just buy a new jack to see if it works?
Working on such small things is tricky with my eyesight so all help is appreciated!