Started up my DD-18 yesterday and it stared making small random rumbling noises, like little thumps. It wasn't even picking up an active signal and I even disconnected the inputs to it.
Any ideas as to what's wrong and whether I can repair it myself? This thing is a beast and I prefer not having to pull it out of the theater and into the car to haul it somewhere. Hoping it's nothing serious but hopefully easy fix.
How does this thing break like that? I hardly even use it and I'm pretty sure i never overdrove it or anything like that.