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  1. J

    Transistor circuit help needed

    The good channel resistor is the one at 6.8k, r306 is measuring 800 ohms. I stated that wrong, sorry. R406 in the good amp is 6.8k. I measured both out of circuit and both resistors are spot on.
  2. J

    Transistor circuit help needed

    Nope, it's blowing fuse. Sorry should have said.
  3. J

    Transistor circuit help needed

    I have an amp on my vintage Telefunken r2r that has lost one channel due to shorted output transistor. I was checking it out and noticed that I have portion of the circuit showing 6.7k across a 6.7k resistor, the functioning channel shows about 800 ohms across it's 6.7k resistor. Both...
  4. J

    Left channen went out, need obsolete transistor substitution

    I just got a Telefunken Magnetophon 3202 reel , circa 1974, that blew transistors in audio power amp. I need good suggestions for replacing BD598 and BD597 from reputable source in USA. Thanks.
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