keron Posted October 3, 2012 Report Share Posted October 3, 2012 Hi,I was recapping my cambridge audio Azur 640p (hypnotoad mode)with bipolar capacitors as the initial change. Everything went fine. Then I changed the 100uf capacitors near the regulator ICs as the second step.Everything worked fine for few minutes then no sound from any channels. I looked again and again for polarity change with the 100 uf electrolytics I changed and any issues with regulators.Regulator output is 18.5 +/- volt.No click heard from relays.After a long day and thoughts I decided to take off the relay.I was not easy. so I have to break it with a small plyer and take it out in parts. The D7 across relay terminals(please see attached circuit) reading 18.5 volt to 20 v using my DMM.The relay is rated for 5 volt. 20 volt across the D7 which essentially is the relay driver voltage bothers me.Any ideas ?.... 640p_circuit_relay.pdf640p_ServiceManual.pdf Quote Link to comment Share on other sites More sharing options...
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