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/138950.aspxTue, 02 Sep 2008 09:26:25 GMT41a2a90c-3a1e-4bd3-b144-3883695a7f38:138950ipaul0https://archivedforum.beoworld.org:443/forums/thread/138950.aspxhttps://archivedforum.beoworld.org:443/forums/commentrss.aspx?SectionID=42&PostID=138950Hi, i have diagrams and stuff, the old type (T81xx) Avants are btw remarkeably alike MX chassis.<div>Before &#39;digging in deep&#39; it sounds like you have a short circuit somewhere on the secondary side of the power supply which makes the voltage drop.</div><div>My first suggestion would be to check the HT transistor (and capacitors/diodes around it) for short circuit.</div><div>Actually, measure with ohm meter the load on the +140 (-something) secondary powerline.</div><div>If this shows no unusual low resistance do the same on the other secondary powerlines (+8, +15 etc)</div><div>If the short seems on the +140 (or 140-something, don&#39;t know exactly by heart) than check that HT circuitry.</div><div style="clear:both;"></div>https://archivedforum.beoworld.org:443/forums/thread/138948.aspxTue, 02 Sep 2008 09:09:17 GMT41a2a90c-3a1e-4bd3-b144-3883695a7f38:138948Die_Bogener0https://archivedforum.beoworld.org:443/forums/thread/138948.aspxhttps://archivedforum.beoworld.org:443/forums/commentrss.aspx?SectionID=42&PostID=138948<p>Yes... but i&#39;m working only on MX types, i dont&nbsp;have experience on&nbsp;Avant&#39;s for repair.</p><div style="clear:both;"></div>https://archivedforum.beoworld.org:443/forums/thread/138945.aspxTue, 02 Sep 2008 08:30:00 GMT41a2a90c-3a1e-4bd3-b144-3883695a7f38:138945Friedmett0https://archivedforum.beoworld.org:443/forums/thread/138945.aspxhttps://archivedforum.beoworld.org:443/forums/commentrss.aspx?SectionID=42&PostID=138945<p>Dillen do not work on tv or video!</p><p>Die Bogner also called Martin does.</p><div style="clear:both;"></div>https://archivedforum.beoworld.org:443/forums/thread/138862.aspxMon, 01 Sep 2008 18:14:56 GMT41a2a90c-3a1e-4bd3-b144-3883695a7f38:1388629 LEE0https://archivedforum.beoworld.org:443/forums/thread/138862.aspxhttps://archivedforum.beoworld.org:443/forums/commentrss.aspx?SectionID=42&PostID=138862<p>&quot;Dillen or Nobby for this&quot; springs to mind - but i know we have plenty more &#39;whizzes&#39; on here that can help.. <img src="http://forum.beoworld.org/emoticons/02.gif" alt="Big Smile" /></p><p>Lee&nbsp;</p><div style="clear:both;"></div>https://archivedforum.beoworld.org:443/forums/thread/138823.aspxMon, 01 Sep 2008 14:47:37 GMT41a2a90c-3a1e-4bd3-b144-3883695a7f38:138823Maurice 0https://archivedforum.beoworld.org:443/forums/thread/138823.aspxhttps://archivedforum.beoworld.org:443/forums/commentrss.aspx?SectionID=42&PostID=138823I wonder if you may be able to shed a little light on a fault i have on my beovision VCR 28&quot; type 8133. At present it&#39;s showing no sign of life at all, i have gone into the fault flow sheets from this sight the fuse on PCB 60 is ok. I am getting a supply current to the smoothing cap &quot;450V&quot;on The Main Power Supply PCB 4 as it charges up ok (about 370V) when i plug in the mains lead. Ive been told the fault is the starting circuit, on the fault flow fault chart it mentions, 14P10 pin 11 to pin 1 approx 8 volts specified i read about 1.5V DC,and 14P10 pin 11 to pin 2 approx 5V DC i read .5V. Obviously i&#39;m not even getting enough for the start up to work do you have any suggestions as to the possible likely suspect. Also do you have a circuit diagram i could have a copy of of PCB 14 &amp; PCB 4 if at all possable to help with fault tracing.Regards Maurice<div style="clear:both;"></div>