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/39944.aspxMon, 20 Aug 2007 05:14:18 GMT41a2a90c-3a1e-4bd3-b144-3883695a7f38:39944ProGram0https://archivedforum.beoworld.org:443/forums/thread/39944.aspxhttps://archivedforum.beoworld.org:443/forums/commentrss.aspx?SectionID=42&PostID=39944<p>Hi Jeff!</p><p>You&#39;re lucky having a manual. I do not and cannot find in beoworlld either. Best method to test: find out the power-supply:&nbsp; Usually, it is running all time, so you should measure a resistance in the powerlead. (some hundred ohms; is there a primary on-off-switch?). Just tip at the mains-plug. If there is no value, the transformer is broken. To be sure, you can measure the transformer itself. In most cases there is a built-in thermo-fuse and sometimes, it can be replaced. If the transformer is working, go on looking for the supply- voltages eg.: 12V, 5V, those for the controller. Maybe a rectifier?...</p><p>Good luck !</p><p>Chris&nbsp;</p><div style="clear:both;"></div>https://archivedforum.beoworld.org:443/forums/thread/39893.aspxSun, 19 Aug 2007 16:58:55 GMT41a2a90c-3a1e-4bd3-b144-3883695a7f38:39893burantek0https://archivedforum.beoworld.org:443/forums/thread/39893.aspxhttps://archivedforum.beoworld.org:443/forums/commentrss.aspx?SectionID=42&PostID=39893hi all,<div><br class="khtml-block-placeholder" /></div><div>below is a *bump* from the general forum. i decided to repost it here in hopes that someone might have some advice.</div><div><br class="khtml-block-placeholder" /></div><div>++++</div><div style="text-align:left;"><span class="Apple-style-span" style="color:#333333;font-family:Lucida Grande;font-size:11.0224px;line-height:16px;">just came into possession of a bm3300. it will not power up. checked the fuses, everything is fine and clean. i could find nothing obvious... any thoughts?</span></div><div style="text-align:left;"><span class="Apple-style-span" style="color:#333333;font-family:Lucida Grande;font-size:11.0224px;line-height:16px;">++++&nbsp;</span></div><div style="text-align:left;"><span class="Apple-style-span" style="color:#333333;font-family:Lucida Grande;font-size:11.0224px;line-height:16px;"><br class="khtml-block-placeholder" /></span></div><div>i just had it apart again out of frustration -same story. i get nothing out of it -no standby light -nothing. i have the service manual, but was hoping that someone might have a listable methodology as to testing.</div><div><br class="khtml-block-placeholder" /></div><div>as always, thx in advance!</div><div style="clear:both;"></div>