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    Adding aux-in to a Beosystem

    I was recently given a Beosystem 3300, which uses 7 pin DIN line connections for audio signal+'datalink' communication between components. It doesn't have an aux-in, but I would like to add one. On any other system I would simply add a 2-to-1 RCA switch, but in this case I still want the...
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    Transistors in a blanket?

    The following is a daughterboard my Rotel A12 integrated amp: There are four transistors (I assume) clad in plastic jackets (orange in the photo). The plastic is sticky from time and probably heat; note the little bits of dust and detritus stuck to the plastic. Any ideas why Rotel would have...
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