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Toaster oven thermostat

Discussion in 'Electronic Repair' started by badgerboy, Feb 20, 2007.

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  1. badgerboy

    badgerboy Guest

    Just for fun, I'd like to fix my old toaster oven. It was not very
    old and in very fine condition except for a burned out thermostat.

    Its a Magic Chef model ctb650m, and the thermostat is a mechanical
    type, with the following written on it:

    Keensound 125V 12A KS198 1300

    I have written to the MagicChef address on the user manual but so far
    received no reply. I think they may be out of the business. I wonder
    if there are any suggestions on how to obtain a replacement or
    equivalent thermostat. Even a similar one that I could rig in, even
    if temperatures were off a bit, would be fine.

    Thanks, Guy
     
  2. Keensound Industries Limited

    Established in 1987, Keensound is a manufacturer and supplier of
    thermostats. Our main products are thermostats and metal parts for household
    electrical appliances such as steam irons, waffle makers, water heaters,
    cooking boilers and air-conditioners.


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  3. What happened to the thermostat?

    --- sam | Sci.Electronics.Repair FAQ: http://www.repairfaq.org/
    Repair | Main Table of Contents: http://www.repairfaq.org/REPAIR/
    +Lasers | Sam's Laser FAQ: http://www.repairfaq.org/sam/lasersam.htm
    | Mirror Sites: http://www.repairfaq.org/REPAIR/F_mirror.html

    Important: Anything sent to the email address in the message header above is
    ignored unless my full name AND either lasers or electronics is included in the
    subject line. Or, you can contact me via the Feedback Form in the FAQs.
     
  4. badgerboy

    badgerboy Guest

    The contact on the bimetallic strip was completely burned thru, and
    the strip itself seems to have been deformed from heating so that it
    no longer makes contact with the other side of the switch, at any
    temperature setting. Do you think this can be bent back into shape
    and fixed?

    Thanks, Guy
     
  5. Not a good idea. I'd try to find a replacement or another thermostat that
    could be made to fit.


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  6. The strip could be bent back into shape but it would be difficult to
    replace the contact(s) reliably.

    But my concern would then be that something caused it, like a
    failed heating element shorting out as it died. The contacts on toaster
    oven thermostats normally last the life of the oven.

    --- sam | Sci.Electronics.Repair FAQ: http://www.repairfaq.org/
    Repair | Main Table of Contents: http://www.repairfaq.org/REPAIR/
    +Lasers | Sam's Laser FAQ: http://www.repairfaq.org/sam/lasersam.htm
    | Mirror Sites: http://www.repairfaq.org/REPAIR/F_mirror.html

    Important: Anything sent to the email address in the message header above is
    ignored unless my full name AND either lasers or electronics is included in the
    subject line. Or, you can contact me via the Feedback Form in the FAQs.
     
  7. badgerboy

    badgerboy Guest

    Thanks for the input,

    Well, an ohmmeter test and operational test of the elements seem to
    show they are good. Each pair comes out to about 15 ohms if I
    remember, and applying power to the elements causes them to heat up
    and glow red.

    I looked at the website suggested by Homer, and Keensound doesn't show
    this model thermostat among their current products. I sent them an
    email asking about it and possible distributors, but haven't received
    a reply yet. I will let you know what I find out.

    Thanks, Guy
     
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