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Audio and Video Talk
The Vintage Audio Section
Pioneer SX-34Bs advice
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<blockquote data-quote="marantz123" data-source="post: 973664" data-attributes="member: 16849"><p>If the good advice steps in this thread have been followed thus far, try inspecting the selector switch carefully. Pull the covers (the bottom one gives a better view/access in this situation) and rotate the selector to phono and take a good look at where the contacts have settled....you could have a badly oxidized contact or a disconnected left channel phono wire which is "floating" without any contact to anything..(wiggle it gently..to check its firmly connected)..hence this possibility causing the dead phono channel. Had a similar selector issue in an SX410....similar wiring and selector with a disconnected/broken wire at one of the wafer switch contacts. </p><p></p><p>Another thing I have found is that a good magnifying glass and a bright torch is invaluable when inspecting tight, busy areas like this ..no matter how good the ambient light is.</p><p></p><p>Edit: I just read after posting this that the amp was sold on and repaired by someone....so this post is not applicable now but will leave it here as part of such fault-finding in future cases, if any.</p></blockquote><p></p>
[QUOTE="marantz123, post: 973664, member: 16849"] If the good advice steps in this thread have been followed thus far, try inspecting the selector switch carefully. Pull the covers (the bottom one gives a better view/access in this situation) and rotate the selector to phono and take a good look at where the contacts have settled....you could have a badly oxidized contact or a disconnected left channel phono wire which is "floating" without any contact to anything..(wiggle it gently..to check its firmly connected)..hence this possibility causing the dead phono channel. Had a similar selector issue in an SX410....similar wiring and selector with a disconnected/broken wire at one of the wafer switch contacts. Another thing I have found is that a good magnifying glass and a bright torch is invaluable when inspecting tight, busy areas like this ..no matter how good the ambient light is. Edit: I just read after posting this that the amp was sold on and repaired by someone....so this post is not applicable now but will leave it here as part of such fault-finding in future cases, if any. [/QUOTE]
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Audio and Video Talk
The Vintage Audio Section
Pioneer SX-34Bs advice
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