+ Post New Thread
Results 1 to 3 of 3
  1. #1
    Advanced Member level 5
    Points: 30,735, Level: 42
    Achievements:
    7 years registered

    Join Date
    Sep 2008
    Location
    cambridge
    Posts
    6,423
    Helped
    470 / 470
    Points
    30,735
    Level
    42

    Two soldering irons failed this week.

    Hi,
    I’ve had two soldering irons stop working this week, and the fuse did not blow in either.
    They are those soldering irons which are just basically a cylindrical resistor between live and neutral, and this cyclinder surrounds the iron and warms it up.
    When I measure the resistance of a working one..its a couple of kiloOhms……a “dead” one measures open circuit between live and neutral…so obviously the connection of live and or neutral to the cylindrical resistor is somehow breaking.

    Why is this happening?
    These kind of irons have been fairly reliable for me in the past…..i wonder if it is the cold snap of weather that’s increasing the expansion/contraction and breaking the wire?

    Here is the part number of one of the failed ones…
    Duratool, DO1847-60 (60W)
    http://www.farnell.com/datasheets/1595604.pdf
    ..this one failed after a few days

    The other one was similar

    •   AltAdvertisment

        
       

  2. #2
    Super Moderator
    Points: 75,009, Level: 66
    Achievements:
    7 years registered
    Awards:
    2nd Helpful Member
    betwixt's Avatar
    Join Date
    Jul 2009
    Location
    Aberdyfi, West Wales, UK
    Posts
    12,294
    Helped
    4081 / 4081
    Points
    75,009
    Level
    66

    Re: Two soldering irons failed this week.

    Those thing are horrible. Get yourself decent temperature controlled models, you can set the temperature you want and keep it fairly constant no matter how much heat your draw away from the tip. The also only draw current when needed so the overall power consumption is much less. I have a Weller temperature controlled (Curie point magnetic switch) iron here I purchased around 1975 which is still working perfectly. I also use a Chinese 'HQ-Solder/30' model with a digital readout which has been in operation for about 15 years.

    Brian.
    PLEASE - no friends requests or private emails, I simply don't have time to reply to them all.
    It's better to share your questions and answers on Edaboard so we can all benefit from each others experiences.


    1 members found this post helpful.

    •   AltAdvertisment

        
       

  3. #3
    Super Moderator
    Points: 49,866, Level: 54

    Join Date
    Apr 2011
    Location
    Minneapolis, Minnesota, USA
    Posts
    12,306
    Helped
    2431 / 2431
    Points
    49,866
    Level
    54

    Re: Two soldering irons failed this week.

    Did your house voltage rise abnormally? That would be a common factor for your two irons. A 10 percent rise in voltage results in 21 percent greater power through resistive loads.


    1 members found this post helpful.

--[[ ]]--