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GE Dishwasher Hack

Discussion in 'Electronic Repair' started by pbillly, Oct 20, 2003.

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  1. pbillly

    pbillly Guest

    Hi, Me ge dishwasher refuses to operate when it senses that the revolving
    arm is not moving. I've tried to repair this via the book but it just
    doesn't wash, (no pun intended).

    I need a circuit which will send a false signal to the "brain" to indicate
    the arm is revolving. A one or 2x's per second interupiton of the 12vdc
    voltage on the pin should do this.

    Any suggestions?
    thanks
     
  2. Fix the arm rotation? :)

    Do you mean it won't start if the arm is stationary as it should be?

    Or it shuts off which is proper?

    --- sam | Sci.Electronics.Repair FAQ Home Page: http://www.repairfaq.org/
    Repair | Main Table of Contents: http://www.repairfaq.org/REPAIR/
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    | Mirror Site Info: http://www.repairfaq.org/REPAIR/F_mirror.html

    Important: The email address in this message header may no longer work. To
    contact me, please use the Feedback Form at repairfaq.org. Thanks.
     
  3. pbillly

    pbillly Guest

    Well, the arm rotates and is suppost to have a magnet embedded in it which
    triggers a sensor mounted to the side of the washtub. Problem is the whole
    system is working against me since the are and sensor are both faulty and
    cannot be replace conviently nor economically.
    Thus I am forced to find a completly new solution or buy a new dishwasher.
     
  4. So how well is it washing dishes if the arm is faulty? The sensor may
    just be a magnetic reed switch which is easily replaced with a generic
    part. I can't say what to do about the arm.

    You can probably fake it with a simple 555 timer driving a relay to
    replace the reed switch.

    --- sam | Sci.Electronics.Repair FAQ Home Page: 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 Site Info: http://www.repairfaq.org/REPAIR/F_mirror.html

    Important: The email address in this message header may no longer work. To
    contact me, please use the Feedback Form at repairfaq.org. Thanks.
     
  5. James Sweet

    James Sweet Guest

    What sort of sensor is it? There's hall effect sensors and read switches
    that I'm aware of, both of which are readily available, seems like it'd be
    easier to hack in a new sensor if you're sure that's the problem.
     
  6. pbillly

    pbillly Guest

    The dishwasher works good. I completely replaced the washer arm, except the
    new are is sold without the magnet embedded. The sesnsor is a reed switch
    mounted in a special case mounted outside the tub. Very, very tricky to get
    the whole shebang to work without hangups.

    I just want to replace the trouble proned system and "trick" this over
    engerneerd part. The 555 timer with a relay is realy the answer, if feel.
    The practical imlementation of this what I need. For example is it possible
    to get to run using the AC or does it need a battery. What exacty does this
    circiuit look like? I would like this to operate automatically when I turn
    on the system without maintainance.

    Please help with a schematic, if possible.
    thanks
     
  7. Are you sure you got the correct replacement?

    --- sam | Sci.Electronics.Repair FAQ Home Page: 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 Site Info: http://www.repairfaq.org/REPAIR/F_mirror.html

    Important: The email address in this message header may no longer work. To
    contact me, please use the Feedback Form at repairfaq.org. Thanks.
     
  8. Sofie

    Sofie Guest

    pbilly:
    This sounds like a chewing gum and bailing wire repair approach to me.
    Instead of taking all of this time (and time is money) to do a "hack" repair
    which may not be reliable and safe, why not just do it correctly with the
    proper part?
    Have you talked to an appliance repair person about this?...... maybe you
    may glean some insight from someone who works on this stuff all the time.?
     
  9. RICHARD1

    RICHARD1 Guest

    I have lit on 555 circuit and examples gonna have to go to my get the
    books and do a scan for ya if ya want if ya dont get info sooner
    could take days
     
  10. The 555 is very well documented on the Web.

    --- sam | Sci.Electronics.Repair FAQ Home Page: 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 Site Info: http://www.repairfaq.org/REPAIR/F_mirror.html

    Important: The email address in this message header may no longer work. To
    contact me, please use the Feedback Form at repairfaq.org. Thanks.
     
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