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  1. Re: Circuit diagram needed for Durst power supplies EST 301 and EST 450

    Meanwhile I substituted the capacitors in the EST 450 board, but something is still wrong, there's a resistor driving the colector of one transistor that literally burns. I will try to fix the...
  2. Circuit diagram needed for Durst power supplies EST 301 and EST 450

    Hi everybody,
    I'm trying to repair two Durst power supplies from a friend, respectively an EST 301 and an EST 450.
    I checked already the regulator board of the ES301 and it's clear that the PCB...
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