I just finished replacing the internal memory backup battery. And, yep the original battery reading was already below 3V. However, it did not correct the main problem. As of now, the length of time for the audio to get activated from the time I turn the power on has dramatically doubled......like 10 minutes. Amazingly, the sound hasn't deteriorated though. When the audio activates, I hear a loud "pop" from the speakers even with the voulume turned all the way off. I'm still hopeful that somebody out there has had the same experience with this amp. I still have one more thing to try.....I noticed that the wiring harness (3 terminals) that goes to the impedance selector board was kinda loose no matter how you try to insert it deeper. I'll try to make it tighter. I'm thinking that the audio on delay might be a protective circuit. I hope it is. I'll post an update as soon as time permits. Thanks in advance.