I have a Harmon Kardon surround stereo system, which is connected to a panasonic projector through a helios DVD player. I cant hear any sound cause some stupid error message keeps saying "Unlock" after i select a surround sound mode. HELP ME!!! =)
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I have the same problem. MY Harmon Kardon AVR 645 just seems to have quit all of a sudden neither my cable tv or my dvd player works. The receiver keeps flashing UNLOCK. I tried a different HDMI cable incase I had a bad cable but no luck. Please help.
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