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Old 04-08-2015, 01:06 AM
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rca2000 rca2000 is offline
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Join Date: Mar 2003
Location: cincinnati,ohio
Posts: 2,090
Does this set use a relay for power switching? If so...is that clicking.

If it is NOT---and you have your standby voltages ok....there is something called the "ZCD" ckt., (Zero cross detection) that may be at fault. WHat is is SUPPOSED to do...is limit the current through the relay, in a way that it is turned on ONLY at the "zero cross" point of the AC line. In THEORY anyway...this is supposed to be easier on the relay contacts. In REALITY this little ckt caused headaches--as it will NOT allow the set to come on at ALL---NO relay click--if it is defective. Usually--it is a bad or maybe a couple--of SMD diodes in this ckt. I am NOT sure how to bypass this--as the set MUST see this pulse from this ckt--before it will allow power up.
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