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Thread: Dewalt 733 Planer Thicknesser Problem

  1. #1
    Join Date
    Aug 2011
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    Mallorca Mediterranean Sea
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    Cool Dewalt 733 Planer Thicknesser Problem

    Hi. I have retired to the Island of Mallorca in the Mediterranean and Forums are my lifline!! Can anyone help me with a recent problem? The DW733 Planer Thicknesser has a safety "No Volt Off" switch (Green and Red Button) and has worked fine for several years. Suddenly it only works when I am actually holding the green button on - as soon as I release it - it stops. I tried another switch that I know works and exactly the same problem. Motor sounds fine, brushes are as new and it is pretty clean generally. What can I look at? What can I hit?
    Thanks in anticipation Peter

  2. #2
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    Hello Peter and Welcome. The switch you describe sounds like a magnetic switch or at least a voltage-present relay controlled switch. When you say you replaced it with a switch that you know works, was this a 100% replacement? That is; was the actual physical switching mechanism and the relay/mag assembly swapped out?
    Last edited by glenn bradley; 08-31-2011 at 03:48 PM.
    Any sufficiently advanced technology is indistinguishable from magic.
    - Arthur C. Clarke

  3. #3
    Join Date
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    You may have a faulty overload/overheat reset on the planer.
    Look for a reset button and push it. That may fix everything. Or if that is faulty it might need replacing or by-passing (probably not a good idea). My Grizzly planer has an overly sensitive overload switch. When replaced all works well.
    "Folks is funny critters."

    Think for yourselves and let others enjoy the privilege to do so, too. ~Voltaire

  4. #4
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    Thanks Glenn - yes the swapped out switch was exactly similar (voltage present type). Another member has suggested a possible problem with the overload reset button so that will be my next check. Really appreciate quick response. Good Luck Peter

  5. #5
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    Thanks Frank - I am on the case - the reset button feels dead (No resistance when I press so may have failed) Thanks again Peter

  6. #6
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    Hi Frank. I just temporarily bypassed reset switch and no change. Still scratching my head. Regards Peter

  7. #7
    Join Date
    Jan 2007
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    Honolulu, Hawaii
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    Dewalt 733 Planer

    Peter,

    Welcome. Try checking for continuity accross your "stop" switch, with the machine unplugged. If that shows an open circuit, (it should only be open when you push the stop button) the planer will start, and run, as long as you hold it (the start button) on. The stop switch is supposed to hold that circuit closed until you open it by pushing the stop button.

    Aloha, Tony
    Last edited by Tony Baideme; 09-01-2011 at 08:24 PM.
    "You got to learn from the mistakes of others. You won't live long enough to make them all yourself". (Author unknown)

    "Time flies like..... an arrow,,,Fruit flies like..... a banana." Groucho Marx

    Ah,,,to live in Paradise!

    Registered voting member

    Fighting for all I am worth, and praying every day.

  8. #8
    Join Date
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    Quote Originally Posted by peter nash View Post
    Hi Frank. I just temporarily bypassed reset switch and no change. Still scratching my head. Regards Peter
    Well, at least, the head scratching part usually feels good.
    "Folks is funny critters."

    Think for yourselves and let others enjoy the privilege to do so, too. ~Voltaire

  9. #9
    Join Date
    Aug 2011
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    Thanks Tony. After an hour in the local Taverna last night - the "Leetle Grey Cells" they started to work and I am embarrased to say have now resolved the problem. The actual "No Voltage Release" switch was faulty and the replacement I tried had the beginnings of a similar fault. The internal solenoid has two insect like antenna terminals. The original had broken off too short to make a connection and the second was making an intermiitent connection. I just assumed (big mistake) that the second switch would be good. Thanks for your time and good island living. Regards Peter

  10. #10
    Join Date
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    Thanks Glenn . After an hour in the local Taverna last night - the "Leetle Grey Cells" they started to work and I am embarrased to say have now resolved the problem. You were spot on. The actual "No Voltage Release" switch was faulty and the replacement I tried had the beginnings of a similar fault. The internal solenoid has two insect like antenna terminals. The original had broken off too short to make a connection and the second was making an intermiitent connection. I just assumed (big mistake) that the second switch would be good. Regards Peter

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