I have owned a Holy Grail since 2004 or so and it was great until recently when that infamous noise problem kicked in. I have tried different plugs in my house and about 5 other people’s houses and no resolution. I opened it up to see if something was amiss inside, and all was completely fine. I am assuming it is a problem with the power supply, but was wondering if there is a solution that others have found works other than buying a new pedal. I am worried that if I buy a new power supply the same problem will be there and in the end I will have to buy a new pedal anyway. thanks.