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  1. I

    PL400 series 2 with power switch and fuses on faceplate

    Thank you for clarifying, the mod is very clean.
  2. I

    PL400 series 2 with power switch and fuses on faceplate

    Correct: positive and negative (per channel), plus mains. Here are some internal pictures (to have it working, I replaced most of the caps, the bias pots, 3 power transistors and added a bracket to hold the supply caps):
  3. I

    PL400 series 2 with power switch and fuses on faceplate

    Some time ago I saw a similar one on Ebay with the same rework, maybe they belong to the same owner. Thanks for the reply guys.
  4. I

    PL400 series 2 with power switch and fuses on faceplate

    Hi All, I recently got this PL400 series 2 which has a power switch and the fuses on its faceplate, also the rack mounting screws slots are present too; the rest is the same. The opening in the aluminum is anodized and its corners radius match the VU meters ones. Do you know if this is a mod or...
  5. I

    Phase Linear 400 bias, advice

    Check the bias variable resistor, their carbon to pin contact surface might fail with time, moisture and thermal cycles.
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