I have the same problem, but even worse.. mine doesn’t work at all anymore… But it started to sound strange before I touched anything on the inside so.. I guess it would have been useless anyway..
none of them, using the dc-brick which have been working perfectly with the pedal in weeks. so I don’t think it’s the power that is the problem..
my new memory boy does not work at all anymore. At first it noised using long delay settnings, then the other day it was dead. I have checked evrything on your list and nothing fits, except the thing about the trimpots wich I haven´t touched, but I guess they might have changed anyway.. Please Help!