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de walt charger problem

Discussion in 'Tools and Materials' started by topbanana, 23 Mar 2006.

  1. topbanana

    topbanana

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    hello all. i have a de walt charger which got wet without me knowing and blew with a big flash from the unit.
    i've opened it up, after trying the fuse, to find a broken what looks like a ceramic resistor? right next to the mains coming in, and where it flashed when it blew.
    its code on it is STM CL 110.
    has anyone had any experience of changing these or can give me any info please.
     
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  3. gcol

    gcol

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    Sounds more like a diode rather than a resistor.
     
  4. topbanana

    topbanana

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    could well be. one of the 2 links to the board is initialed 'R1'.
    what does a diode do?
     
  5. swelec

    swelec

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    trawled the net and one possibilty is a thermometrics current limiting device part number CL 110 but R1 suggests a resistor!!!

    http://www.mouser.com/catalog/625/440.pdf

    does it look like this :?: :?:

    diodes are like non return valves - they allow current to flow in one direction only so can be used to convert ac to dc ( to charge the battery )

    http://www.maplin.co.uk/search.aspx...ia=Current Limiters&doy=24m3&worldid=3#prices

    some inrush current limiters available here but not to the same specification
     
  6. big-all

    big-all

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    may i suggest that when you get it working again[if you do]
    to test it you choose your oldest most knackerd [lowest voltage battery]
    so if it does cook the battery its less off a loss or cheaper to replace ;)
     
  7. topbanana

    topbanana

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    thankyou very much swelec.
    yes looks like your current limiters.
    will visit maplin to discuss further.
    fine idea big all, thanks also.
     
  8. swelec

    swelec

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    Glad to help

    Managed to blow away the cobwebs long enough to dig that out of memory

    Have not touched electronics for many a year :D :D
     
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