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Resistor Color Code
  • Hello, guys!

    I discovered a blown resistor with the following color code in one SMPS:

    yellow (4)

    Violet(7)

    Gold(?)

    Gold

    Black.

    I'm stumped as to what the value is.

    The resistor's dimensions are standard MF0207 metal film dimensions.

    I believe it is a fusible resistor in series with the primary of the ferrite transformer, with a TinySwitch TNY268 on the other side of the primary.

    What is the resistor in the primary?

    I've read some articles like https://www.apogeeweb.net/electron/a-guide-to-color-code-of-resistor.html, but I still have no idea.

    Any ideas would be greatly appreciated.