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pinoeer

  1. nsun

    Voltage regulator SA 7700

    Hi! Im new here, need some help with an SA 706 (SA 7700) This European version is on 240 V (or 220V) The protection relay doesn,t engage, and when I measure pin 1 its only 5,3 V... So I suspect something in the 13 V regulator, or before that. The output from trafo is 68,7 VAC (TP 12 - TP 13) or...
    • nsun
    • Thread
    • pa3004 pinoeer sa 706 sa 7700 sa-706 sa-7700 voltage regulator
    • Replies: 15
    • Forum: Pioneer Audio
  2. sstern1966

    SX-838 modifications?

    I have recently acquired an SX-838 in splendid physical condition. I love the looks (not that important), but the sound has less bottom than I would hope for. Hence a bit less of a soundstage and sonic headroom than I would like. Otherwise, excellent sound reproduction. Does anyone know of any...
  3. 1mike161

    Capacitor Coupling?

    I have a Pioneer TX-9500ii tuner with both variable and fixed line output. The negative side of the output terminals are tied to ground. And, the negative side of the output terminals are also coupled the ground with a 0.04 microfarad 50V ceramic capacitor. What is the purpose of this...
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