jrsh92
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jrsh92

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jrsh92 was last seen:
Oct 30, 2012
    1. Dave Zimmern
      Dave Zimmern
      Picked up Lafayette LR-2020 Receiver. Same symptoms as subscriber experienced, 2.5A speaker fuse blew upon power up. PAs (2 TO-220 transistors in complem-symm), were blown, delivering -30 volts to speaker terminals, blowing fuse (not speaks). Replacing PAs & other parts made unit play, but PAs still run hot. There are quiescent current adjustment pots. How do I set up these pots? Tks!
    2. Dave Zimmern
      Dave Zimmern
      Picked up Lafayette LR-2020 Receiver. Same symptoms as subscriber experienced, 2.5A speaker fuse blew upon power up. PAs (2 TO-220 transistors in complem-symm), were blown, delivering -30 volts to speaker terminals, blowing fuse (not speaks). Replacing PAs & other parts made unit play, but PAs still run hot. There are quiescent current adjustment pots. How do I set up these pots? Tks!
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