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DIY For Audio
Power amp diagnostics / earthing advice: help needed
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<blockquote data-quote="gbyleveldt" data-source="post: 73514" data-attributes="member: 122"><p>Andries, PLEASE don't leave the mains earth of the Rotel disconnected. The only time an earth may be unconnected is if the chassis is double insulated. The Marantz is, the Rotel is not. You thus have a potentially unsafe situation should (for whatever reason) a mains lead comes into contact with the chassis. I know it's convenient just to leave it off (and manufacturers don't like it either, hence double insulation) but in this case you stuffed, so you will just have to work through this one.</p><p></p><p>These are terribly hard to diagnose if you not sitting with the unit in front of you. Usually you try arb things on the unit and thus gather clues about the issue. Also, diagnosing earth related issues on equipment has the most experienced guys pulling their hair out, it really is pretty tough sometimes. So the best advice I can offer is that you welcome to bring the unit past Ludo or myself so we can take a peek if the previous suggestions leads nowhere.</p><p></p><p>But for heavens sake, don't leave that earth floating.</p><p></p><p>I'll get off my soap box now...</p></blockquote><p></p>
[QUOTE="gbyleveldt, post: 73514, member: 122"] Andries, PLEASE don't leave the mains earth of the Rotel disconnected. The only time an earth may be unconnected is if the chassis is double insulated. The Marantz is, the Rotel is not. You thus have a potentially unsafe situation should (for whatever reason) a mains lead comes into contact with the chassis. I know it's convenient just to leave it off (and manufacturers don't like it either, hence double insulation) but in this case you stuffed, so you will just have to work through this one. These are terribly hard to diagnose if you not sitting with the unit in front of you. Usually you try arb things on the unit and thus gather clues about the issue. Also, diagnosing earth related issues on equipment has the most experienced guys pulling their hair out, it really is pretty tough sometimes. So the best advice I can offer is that you welcome to bring the unit past Ludo or myself so we can take a peek if the previous suggestions leads nowhere. But for heavens sake, don't leave that earth floating. I'll get off my soap box now... [/QUOTE]
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DIY & Tutorials
DIY For Audio
Power amp diagnostics / earthing advice: help needed
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