The power inserter/DECA unit on my HR34 started shrieking tonight. No idea about the cause. It was a moderately loud, continuous whistle. It finally went away after I unplugged it from the power source. After I plugged it back in, the shrieking went away and everything works fine, as far as I can tell. I'm wondering if it was a leaking capacitor. Will D* replace this unit at no charge, or should I just buy a replacement on ebay or something?