Hair Iron Heater

Discussion in 'General Electronics Chat' started by R!f@@, Jan 20, 2012.

  1. R!f@@

    Thread Starter AAC Fanatic!

    Apr 2, 2009
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    I like to reverse Engineer this

    [​IMG]

    [​IMG]

    [​IMG]

    So who's gonna help me ?:cool:

    I think I need to know the part no.'s first, Eh!.
    them transistors and diodes..so I can draw the schema..NO ?

    I got high res Pics..uploading them now..it will take some time.

    High res links are now available.

    1 2 3
     
    Last edited: Jan 20, 2012
  2. PaulEE

    Member

    Dec 23, 2011
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    Heh heh heh...
     
  3. R!f@@

    Thread Starter AAC Fanatic!

    Apr 2, 2009
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    Keep giggling..

    Once I draw a schema out of it and showed it to ya, you would want to build something similar.

    It's how the heat is controlled I am interested in.

    U see, this thing takes 220VAC and regulates the heat of the plates without feed back and it is done through a SCR.

    This is what interests me.

    I blew the SCR, the wires shorted due to insulation wear. That's why I took it apart but always been interested in studying it..so here's my chance.
    First I need to replace the SCR and take some voltages..


    OK..since I lost most of my PDF files you guys gave me..
    I like to know what the SMD transistor no.s are.
    Can any one decipher the part no. ?
    Please..!
     
    Last edited: Jan 20, 2012
  4. R!f@@

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    OK ..I manage to read the no. s on the transistors..

    to really understand it u got to see this.

    Can any one tell me what they are actually, I mean the data sheets.
     
  5. plutoa34

    New Member

    Jan 21, 2012
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    This is really nice forum with awesome topics.
    Thanks for sharing.
     
  6. Sparky49

    Active Member

    Jul 16, 2011
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    I'd like to try and help, but I cannot see the red letters on the black! Could you do it with white bold letters please?:)
     
  7. Lundwall_Paul

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    Oct 18, 2011
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    I learned something new today. I thought hair irons just had a cheap
    bimetallic thermostat in them.
     
  8. R!f@@

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    How about now

    [​IMG]
     
    Last edited: Jan 22, 2012
  9. thatoneguy

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    Feb 19, 2009
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    Which pins are the input voltage, which are the output to the heater element?

    The white/yellow device, soldered to both ends that sticks out, is that a thermal fuse or a thermistor?
     
  10. R!f@@

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    The unexpected happened.

    The comparator chip blew when I gave power after putting a new SCR.

    Interesting..:D

    [​IMG]

    BAAAANG !

    The picture has solder jumpers. Don't get hasty.. Pictures were taken during the de-soldering !


    [​IMG]
     
  11. R!f@@

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    Pads near the switch is the Input and the fuse is a 2A one

    and for ur info...it blew right to my face..that was something worth seeing..
     
  12. thatoneguy

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    Did the old SCR test bad?

    What is the comparator comparing, if you've figured out the operation of it yet...
     
  13. R!f@@

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    Operation ?

    If I tell you that the old SCR has Split. Would you believe that it is bad.
    And I do mean literally...

    To figure out anything I need to know the transistor part no.'s ...don't you think?
     
  14. spinnaker

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    A little super glue should fix you right up. :)
     
  15. thatoneguy

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    I figured you'd have a schematic done by now. :D
     
  16. R!f@@

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    Heck no. not yet..

    Too busy with the riot that is going on in here
     
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