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hot plate quit- no power

Discussion in 'General Electronics Discussion' started by noquacks, Sep 12, 2013.

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  1. noquacks

    noquacks

    55
    1
    Jun 26, 2013
    People,

    have a hot plate that quit all of a sudden. Opened it up, with switch on (knob which turns clockwise), no voltage at 2 wire terminals . Doesnt this mean the wire has to be bad, and not at this blame the turn knob? (photo atached)
     

    Attached Files:

  2. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

    25,418
    2,788
    Jan 21, 2010
    Use the "go advanced" option and then use the paperclip icon to attach a larger image.

    If that fails, store your image on some external site and just post the link.
     
  3. shrtrnd

    shrtrnd

    3,772
    493
    Jan 15, 2010
    Like *steve* said, can't see your picture very well (too small).
    Having repaired a lot of hot plates, I'll offer this:
    Wires don't go bad, but they break, or break mostly at the electrical connections.
    Check the ends of the wires to make sure they're connected. (or for breaks in the wire).
    The other things to check, are the switch itself, and the guaranteed to be there, thermal fuse that's
    in-line with the heating wire, ...which is the most likely cause.
     
  4. noquacks

    noquacks

    55
    1
    Jun 26, 2013
    thnaks, people. I will try the picture idea, and also check the terminals, etc.
     
  5. noquacks

    noquacks

    55
    1
    Jun 26, 2013

    Attached Files:

  6. noquacks

    noquacks

    55
    1
    Jun 26, 2013
    nope- no good. sheesh.......
     
  7. davenn

    davenn Moderator

    13,669
    1,891
    Sep 5, 2009
    you are only uploading a thumbnail sized image

    I assume you have an image ~ the 640 x 480 pixel in size ?

    Dave
     
    Last edited: Sep 14, 2013
  8. noquacks

    noquacks

    55
    1
    Jun 26, 2013
    thanks, dave, for the advice on pixel size- but maybe this will get to the meat of it- I did manage to check ohms on the 2 lines, and whopee- found a break!! Wow, so impressed...LOL
    Looks like one leg of the plug is showing 0.6 ohms (good), but the other leg checks out Ok UNTIL you get the the end where the 110v live turns into the "heat rated" line(?), which shows infinity! yes, the other line is good up to the control knob.

    So, doesnt this mean I have a break/bad line there? And Im guessing, its not worth soldering on a new one. right (thee sections (about 5") are special, heat rated lines that may not be worth the headache/expense in obtaining)??

    Thnaks,, people.
     
  9. shrtrnd

    shrtrnd

    3,772
    493
    Jan 15, 2010
    COULD be a break in the wire, but I still think you're missing the most probable
    cause, a thermal fuse. Is there asphestos-type covering over one of the ends
    of the connection to the actual nichrome heating element wire? Maybe you could
    pull back any insulating covering, and find the thermal fuse.
     
  10. noquacks

    noquacks

    55
    1
    Jun 26, 2013
    yes, there is a thermal/asbestos like sheath covering the entire "heat" line. But doesnt "feel" like theres a fuse under there. Could there be?? So thin? OK, I'll go back out there, dig it out of the trash barrell, and cut the sheath..........
     
  11. noquacks

    noquacks

    55
    1
    Jun 26, 2013
    Holy cow, shrt, youre right!! There is a fuse tucked inside there! Its a tiny one, it says "157 deg C, 10A, C0350 fuse". other print/letters but cant tell- faded. may not be important(?).
    Now, is it wort it to get new? Where can one get a fuse? $$? It seems its just crimped on.
     
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