https://archivedforum.beoworld.org:443/forums/30.aspxA Forum for Technical Help and Support on Bang & Olufsen products over 25 years old.enCommunityServer 2008 SP2 (Build: 31104.93)https://archivedforum.beoworld.org:443/forums/thread/336631.aspxWed, 31 Aug 2011 07:09:14 GMT41a2a90c-3a1e-4bd3-b144-3883695a7f38:336631Dillen0https://archivedforum.beoworld.org:443/forums/thread/336631.aspxhttps://archivedforum.beoworld.org:443/forums/commentrss.aspx?SectionID=30&PostID=336631<p>I agree it sounds like a bad decoupling of the supply to the digitally controlled volume/tone controls.<br />Replace capacitors on the processor board and also the small 10uF and 22uF ones between the mains<br />transformer and&nbsp;the regulators in the power supply section.</p> <p>Martin</p><div style="clear:both;"></div>https://archivedforum.beoworld.org:443/forums/thread/336629.aspxWed, 31 Aug 2011 06:47:53 GMT41a2a90c-3a1e-4bd3-b144-3883695a7f38:336629tournedos0https://archivedforum.beoworld.org:443/forums/thread/336629.aspxhttps://archivedforum.beoworld.org:443/forums/commentrss.aspx?SectionID=30&PostID=336629<p>Hmm... probably some internal data signal bleeding into audio. I suppose the coming and going of the sound corresponds to the display changing on the Beomaster?</p> <p> I can actually hear some bleeps and buzzes on my BM6500 if I select an unused source and crank up the volume near to max.</p> <p>Now what to do about it, I dunno... is it on radio as well or just the Beogram? In the latter case, I guess it could be a bad ground in the connecting cable.</p><div style="clear:both;"></div>https://archivedforum.beoworld.org:443/forums/thread/336597.aspxTue, 30 Aug 2011 20:46:35 GMT41a2a90c-3a1e-4bd3-b144-3883695a7f38:336597grillomex0https://archivedforum.beoworld.org:443/forums/thread/336597.aspxhttps://archivedforum.beoworld.org:443/forums/commentrss.aspx?SectionID=30&PostID=336597<p>Ha,.. good point, I have a BeoMaster 5500 with BeoGram 5500 and thus the Master control, it is also paired with B&amp;O pentas Passive MK1, the question is... every time I push a button in the master control I get this high pitch sound through the speakers for the first initial 3 to 5 seconds and then it goes away, specially if I try to lower or up the volume.</p><div style="clear:both;"></div>https://archivedforum.beoworld.org:443/forums/thread/336490.aspxTue, 30 Aug 2011 02:44:45 GMT41a2a90c-3a1e-4bd3-b144-3883695a7f38:336490tournedos0https://archivedforum.beoworld.org:443/forums/thread/336490.aspxhttps://archivedforum.beoworld.org:443/forums/commentrss.aspx?SectionID=30&PostID=336490<p>Sorry, but with this initial data it&#39;s impossible to say anything except that you possibly need an exorcist <img src="http://forum.beoworld.org/emoticons/01.gif" alt="Smile" /> </p> <p>So: what exactly do you have, how is it connected, and what are you trying to do?</p><div style="clear:both;"></div>https://archivedforum.beoworld.org:443/forums/thread/336475.aspxMon, 29 Aug 2011 20:00:09 GMT41a2a90c-3a1e-4bd3-b144-3883695a7f38:336475grillomex0https://archivedforum.beoworld.org:443/forums/thread/336475.aspxhttps://archivedforum.beoworld.org:443/forums/commentrss.aspx?SectionID=30&PostID=336475<p>Ok guys here is another question that I hope you all can shed a beaming light, every function I attempt to do gives me a pitching sound through the speakers, any one have any idea what this might be?</p><div style="clear:both;"></div>