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  1. #16
    Join Date
    Sep 2012
    Location
    York, North Yorkshire UK
    Posts
    6,439

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    Quote Originally Posted by droog View Post

    If I was repairing the board for my own use I would not be concerned by removal of the thermal fuse. I am not advising to do that as it would void warranty etc, etc,

    Any external transformer will most likely not be fitted with a thermal fuse and you would still void warranty etc,etc.
    I'm in the UK, I think that current requirements are that all transformers below a certain size have to have thermal protection built in.
    Best Regards:
    Baron J.

  2. #17
    Join Date
    Jan 2008
    Location
    Melbourne
    Age
    67
    Posts
    1

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    Hi Guys

    Just a follow up on this...About three weeks ago i was at my sisters house and her range hood was taken out..I enquired what was wrong with it and apparently it was completely dead...So i removed the pcb and said i would have a look at it....I looked over the track side for dry joints, broken tracks , all looked good , so checked the component side for heated or damaged components , all good.... Got my meter out and checked the primary of the transformer and it was open circuited....Did a google for the part number of the transformer which led me to this thread...I thought bingo must be the thermal switch...Pulled the transformer out and got to the thermal switch and it tested ok...so the primary had gone open.... The transformer had only one secondary winding so i looked for a 12v pcb mount one and sourced it from RS Components part number 732-0389...was a drop in replacement...Installed the pcb on friday and did a quick test and appears all ok ....Have attached a pic with the new transformer installed..
    Cost of transformer $12.40...
    Attached Images Attached Images

  3. #18
    Join Date
    Sep 2012
    Location
    York, North Yorkshire UK
    Posts
    6,439

    Default

    Hi Shed, Guys,

    You could salvage a suitable transformer from a 12 volt wall wart ! That will most probably have the thermal fuse built in.

    Shed: My apologies ! I had forgotten about this post and recall saying that I had some thermal fuses kicking about. If you still want one PM me.
    It will be after Christmas before I can get around to sorting it.
    Best Regards:
    Baron J.

  4. #19
    Join Date
    Apr 2012
    Location
    Healesville
    Posts
    2,129

    Default

    Quote Originally Posted by BaronJ View Post
    Shed: My apologies ! I had forgotten about this post and recall saying that I had some thermal fuses kicking about. If you still want one PM me.
    Thanks Baron, but not needed.
    Actually the rangehood works a bit too good for my liking, even with the fan on low speed it nearly sucks the lids off the pots and sounds like a jet engine

    cheers, shed

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