I purchased a Russound CAS44 multizone amp with 3 kp4 keypads. I have connected the cat 5 cable to the keypad with a punchdown tool and connected the other end of the cat 5 to the russound unit. When I turn on the Russound unit, the volume lights on the keypad flicker on once and then I cannot get the keypad to turn on. I tried connecting a different cat5 cable to a different keypad and the same thing happened. I also get the keypad to flicker when I use a remote control near the keypad but nothing else. Any help diagnosing this problem would be extremely helpful and most appreciated.