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ARCHIVED FORUM -- April 2007 to March 2012 READ ONLY FORUM
This is the first Archived Forum which was active between 17th April 2007 and
1st March February 2012
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(Are those test CD's ?) Most manuals speak of the YEDS5 but it seems completely unavailable. I would recommend the original pack from B&O, expensive but good. Alternatively one of the sets from Philips, which were also available from B&O at some point, maybe they still are. Depends, I suppose, on your needs and wallet. Martin
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Well done ! I know the phenomenon, it's called tin whiskers. Never saw it in a tuning capacitor myself though, but I can't see why it wouldn't happen. Ultra thin hairs grow from tinned surfaces, sometimes seen as a single strand or two, other times as a close woven carpet made of conducting metal strands. The UK vintage radio forum did a
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4 screws. It's printed underneath the Beomaster... Martin
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Welcome to Beoworld ! If it stood unused for a long time, the mechanical contacts may have oxidized a bit. It's easy to try it several times, 30-40 or more and see if the oxidation wears away. Martin
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Side with metal and plastic parts upwards. Grooves downwards. (As seen normally). Make sure to mate all levers and arms. Martin
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I have started using an all-synthetic oil for this with good results. It doesn't evaporate or dry and it's available on the US Ebay. Liquid bearing, I think. Martin
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Amplifier caps first. Martin
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[quote user="Aarong"] this tuner is very very uncommon in it's circuit. the oscillator/mixer is the right tube and the left tube is the RF amp. (correct?) [/quote] Quite common circuits for a B&O, really. The "tubes" in the schematics is actually one tube. The ECC85 is a double-triode and to ease the reading of the schematics
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Correct. Those are the sensors. (The ones with four leads will track both ways!). The lamp is a wedge socket type and should be very easy to replace. It sits right above the interrupter (where the sensors sit below). I often find a little oil around the screws holding the assembly and also between the two plastic halfes. Nothing to worry about, unless
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OK, we're back at the local osc. then. It's merely a handful of components or two, the ECC85 tube being the only active part. Martin
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