Resistor Difficulty

Discussion in 'Electronics Resources' started by TotallyTwizted, Oct 6, 2014.

  1. TotallyTwizted

    Thread Starter New Member

    Oct 6, 2014
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    Hello!
    I am having trouble deciphering the resistance of two resistors I am trying to replace. They are marked "3W0.5
    Ωk" Does the "k" mean that this is a kilohm value or does it have some other significance because it follows after the omega symbol?

    Help with this would be greatly appreciated!
     
  2. MrChips

    Moderator

    Oct 2, 2009
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    A photo would help. Is this a big fat resistor? 0.5-ohm 3W is possible. Measure with an ohmmeter.
     
  3. TotallyTwizted

    Thread Starter New Member

    Oct 6, 2014
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    They are pretty big resistors. They got fried up pretty bad (as shown in pic). Would an ohmmeter still be accurate on fried resistors? [​IMG]
     
  4. takao21203

    Distinguished Member

    Apr 28, 2012
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    0.5 OHMs - I just know it
     
  5. TotallyTwizted

    Thread Starter New Member

    Oct 6, 2014
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    Oki doke Thats good enough for me. Thanks!
     
  6. takao21203

    Distinguished Member

    Apr 28, 2012
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    just saying- normally nothing evaporates from these kinds. I guess it is some kind of glue which was just charred over time.
    They are still fine maybe. 0.5 Ohms is wirewound and they look differently after burnout.
     
  7. TotallyTwizted

    Thread Starter New Member

    Oct 6, 2014
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    So these may be totally fine?
     
  8. MrChips

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    Oct 2, 2009
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    Your photo is badly out of focus. From what I can tell, the charred bit is not from the resistor but from some other plastic material that was resting on the two resistors. Those resistors have a ceramic body and it would take a lot of beating to be destroyed.

    A resistor overheating would be uniformly discolored. Those are not.
     
  9. takao21203

    Distinguished Member

    Apr 28, 2012
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    i'd say so, yes. Because if they are carbonized like that, there'd be more (visible) damage surrounding them.
     
  10. TotallyTwizted

    Thread Starter New Member

    Oct 6, 2014
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    You two have been a big help! Sorry about the crappy photo, I'm not very good at using forums etc.
     
  11. kyle7119

    Member

    Feb 11, 2011
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    I second this.
     
  12. takao21203

    Distinguished Member

    Apr 28, 2012
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    useless post?
     
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