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In Reply to: RE: Yamaha C2A -- anyone intimately familiar with this preamp? Repair advice needed... posted by LowRedMoon on April 13, 2017 at 16:35:21
First I would get direct replacements for those transistors.
Second, check all the associated circuitry of those transistors. They usually just don't blow for no reason. Recap the unit as well. Look for toasted resistors near the transistors.
My guess is your transistors choice isn't suited to that circuit, eg won't turn on and pass a signal.
Follow Ups:
Good point. I ordered new Nichicon caps for it. I'll replace them and go from there.
Finding direct replacements has been unfruitful so far. It's a heck of a lot easier to find a 12AX7 than it is to find a transistor that was manufactured a couple decades ago - the one thing that annoys me about solid state.
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