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Recent content by R0und_R0bin

  1. R

    Zenor Diode tests as a regular Diode Can you help?

    Explain you dear moderator. Just saying "that's nonsense" doesn't help anybody. And I will be very pleased to read your explanation.
  2. R

    Zenor Diode tests as a regular Diode Can you help?

    What is the purpose of ZD5 in your circuit? Because under zener symbol (especialy on the board) it can be uni or bi directional or TVS. Anyway, you'll need a certain amount of current flowing into (forward or backward) to see the breakdown voltage. So try with more current.
  3. R

    Need help understanding what this circuit does (urgent)

    This makes me think of an electromagnetic door lock with keypad activation. But it is more a synoptical schematic than a true electronic one
  4. R

    Need help with fixing pc subwoofer+speakers please

    I've posted some pics, check it. The capacitor are decoupling caps so don't bother with exact values. And the led + switch is not mandatory, just unplug the whole system when not in use
  5. R

    Is this an inductor?

    Don't you got a multimeter? You can measure it easily. Be careful of other components in //
  6. R

    Is this an inductor?

    +1
  7. R

    Need help with fixing pc subwoofer+speakers please

    Hi everybody! Just finish to fix an old logitech X-230 model. Same issue as roberto8978 for me, it save me a lot of time actually, I was begin to test power component to find the failure. The cable from the remote control was faulty --> 1 wire (green) with erratic behaviour, tricky to find it...
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