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/130535.aspxFri, 18 Jul 2008 09:00:21 GMT41a2a90c-3a1e-4bd3-b144-3883695a7f38:130535PWH0https://archivedforum.beoworld.org:443/forums/thread/130535.aspxhttps://archivedforum.beoworld.org:443/forums/commentrss.aspx?SectionID=42&PostID=130535<p>I got given this and on testing it worked in Playback /FF/RW mode at least for a while. It has obviously been somewhere very damp judging by all the rust. &nbsp;After taking it apart to clean the very noisy headphone slider and re-assembling, It did not work. Having checked I found one of the voltage regulators (-15V) had gone and by renewing it and the leaky cap associated near the fuse, that is restored OK. </p><p>Next the fuse on the uP board was blown, so I replaced all the electrolyitic caps for luck on the board, replaced fuse and it stayed intact. Lights&nbsp;were on, VU meters full on, no response from the keypad. Measuring at the fuse, I see 12V, but next to it a 6.2V Zener, which on inspection is physically broken. Replaced 6.2V zener and fuse has gone. I presume the VCC pin 40 is looking for 5V not 12 so maybe its gone bang? </p><p>Any ideas what to do!!</p><p>&nbsp;</p><p>Thanks Peter</p><p>&nbsp;</p><p>&nbsp;</p><div style="clear:both;"></div>