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/47184.aspxWed, 19 Sep 2007 02:14:36 GMT41a2a90c-3a1e-4bd3-b144-3883695a7f38:47184Peter0https://archivedforum.beoworld.org:443/forums/thread/47184.aspxhttps://archivedforum.beoworld.org:443/forums/commentrss.aspx?SectionID=30&PostID=47184<p>Martin is the expert here but I would suspect that you have a fault with some sort of loose contact with the volume control circuit. The volume control seems very complicated (I am not that technical!) but essentially seems to rely on a photo sensitive cell and some bulbs in a box. (I told you I was not technical!) Failure of one of these bulbs gives symptoms similar to those you describe. My 2400 developed a fault where it would suddenly go to full volume. The fact yours seems intermittent suggests loose contact or cracked solder rather than actual bulb failure.</p><p>I am sure Martin will have a considerably better and more technical reply though! <img src="http://forum.beoworld.org/emoticons/58.gif" alt="Laughing" /></p><div style="clear:both;"></div>https://archivedforum.beoworld.org:443/forums/thread/47145.aspxTue, 18 Sep 2007 17:07:44 GMT41a2a90c-3a1e-4bd3-b144-3883695a7f38:47145ScottMc0https://archivedforum.beoworld.org:443/forums/thread/47145.aspxhttps://archivedforum.beoworld.org:443/forums/commentrss.aspx?SectionID=30&PostID=47145<p>hi folks,</p><p>i&#39;m having a strange intermittent problem with the volume controls on my BM1900-1. Basically one day i turned it on and the valume started at the preset normal level but then instantly started decreasing to zero. this happens regardless of whether tape/phono/radio is selected.</p><p>I turned the unit off and then back on and the same happened. i left it overnight and in the morning it was fine, unfortunately a couple of days later it started doing it every time it was turned on.</p><p>this&nbsp;started around 2 years ago - at the time i took the beomaster and wiring diagrams to the local tv repair shop (he had a lot of vintage radios in the window and i also noticed a Beo-Ouverture in the shop so i thought he&#39;d do a decent enough job of fixing it.</p><p>&nbsp;After 2 months of it in the shop he returned it to me still not repaired claiming he could not understand what was wrong with it. In the mean time i had bought a new beomaster 3300 (subsequenty replaced by my BC8500) - the 1900 was then put away in a box for around a year until i moved house.</p><p>&nbsp;whilst unpacking after the move i plugged it in and amazingly everything seemed to be working perfectly. this continued for weeks and so i bought a pair of CX50&#39;s for it and set it up in my study. </p><p>one night whilst the speakers were unplugged i had turned up the volume to maximum on the unit, the volume display reached the maximum and then cut straight back to zero. i turned the unit off and back on again and guess what..... the fading volume problem had started again.</p><p>&nbsp;I really like my 1900 as it was the first B&amp;O i bought - i don&#39;t really want to have it sent off for weeks again to another repair shop only for them to scratch their heads as to the problem!</p><p>&nbsp;</p><p>has anyone here had a similar problem and is there an easy fix? all the functions on the system appear to be working perfectly it is just the volume continually decreasing that is the problem.</p><div style="clear:both;"></div>