I had a different problem, but here is how I fixed it: With my MB, I found that any feedback setting higher than 12 o’clock resulted in immediate and very loud self-oscillation. Below that, there were hardly any repeats. It was all or nothing. I knew that it was wrong–that I should be able to get more our of the feedback before it self-oscillated. For the record, I play a Stratocaster and was just playing the delay with no other effects.

Reading the comments here, on other threads, and in other places around the internet, it appears that my problem was unique. Most people seem to have trouble getting any oscillation or repeats. Generally the suggested fix seemed to be use a battery or the a/c adapter that came with the pedal. I, however, was using the a/c adapter that came with the pedal, so since I had the opposite problem, I tried the opposite solution and plugged the pedal into my daisy-chain a/c adapter, the one that came with my pedal board. Bingo! Now the pedal sounds great, perfect and just like it apparently should from the demo videos I’ve seen.

So, the upshot of all of this is that I would suggest trying different power sources. Obviously, there are some that will hurt your pedal, so don’t try those (yet) but try different batteries or a/c adapters. Good luck, it is a great pedal when it works.