crackling fault

  1. G

    Pioneer SA8500

    Hi, I have a Pioneer SA8500 (series 1) in very good condition. However, it has recently developed a problem. After playing it for a while, it starts making a loud crackling noise. I have cleaned all switches, including the power. The noise is not affected by the volume control or any other...
  2. M

    MA 5100 Transistors

    Hey everyone, great to be here! My MA5100 has developed a crackle when warm (left channel). Freeze spray pinpoints the fault to Q209 (PNP driver), so the course of action is to replace a few small signal transistors on both channels, as a precautionary measure. All good so far. I have been in...
  3. oz-2

    SA 9500 Mk I intermittent crackling on LH channel - advice?

    Hello AK'ers I have a small problem with my SA 9500 Mk 1 After about 10 - 15 mins of use I get a crackling sound on the LH channel. Observation of the L/S shows that this is accompanied by a large, gradually varying, dc voltage which moves the cone in and out over about 2 seconds. The sound...
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