Currently Being ModeratedJun 1, 2012 3:53 PM (in response to chemistrange)Re: FLEXTONE II HD PROBLEM
Although I personally cannot "guarantee" that the battery is the root cause, I can tell you that our repair techs all agree that 12 years is way beyond the expected lifetime of those internal memory backup batteries.
I say you replace it, because it is not a very pricey part. Replace it with a brand new one and re-check. Best case scenario: problem corrected. Worse case: you know that the issue is deeper than the battery and you'll have invested a few dollars plus whatever amount of time it took to open the unit up and remove/replace the battery.
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.