https://archivedforum.beoworld.org:443/forums/42.aspxAdvanced Technical Forum for discussion of Bang & Olufsen products at component level.enCommunityServer 2008 SP2 (Build: 31104.93)https://archivedforum.beoworld.org:443/forums/thread/258931.aspxThu, 11 Feb 2010 18:55:35 GMT41a2a90c-3a1e-4bd3-b144-3883695a7f38:258931Eugenio Colazzo0https://archivedforum.beoworld.org:443/forums/thread/258931.aspxhttps://archivedforum.beoworld.org:443/forums/commentrss.aspx?SectionID=42&PostID=258931<p>Hello</p> <p>I&#39;m here to discuss about clock.</p> <p>&nbsp;</p> <p>I have a Beocenter 9300 that power on, open and close doors, but not enable the speaker output.</p> <p>The relay is ok, the problem is in the IC1 of the amplifier PCB, it doesn&#39;t receive the clock at pin 3 so I started to go backwards in the circuit to check where the clock disappear, in the Base of TR7 of PCB 40 there is an orrible signal, nothing to do with a &quot;square&quot; signal or similar...</p> <p>The same in the P32-2 of PCB 3... even if the connector is disconnected and the signal is sent directly to the oscilloscope.</p> <p>So this is my question, does someone know how this signal appears correctly on the screen?</p> <p>Could be damaged the IC 10 of pcb 3? Is usual?</p> <p>Thanks a lot</p> <p>&nbsp;</p> <p>Eugenio</p> <p>&nbsp;</p> <p>Hey! Happy New Year !!!!!!!!!!</p> <p>&nbsp;</p><div style="clear:both;"></div>