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Treadmill Console Button Panel Ribbon Cable Fail

Discussion in 'Troubleshooting and Repair' started by vestaviascott, Jan 12, 2019.

  1. vestaviascott

    vestaviascott

    59
    0
    Jul 28, 2013
    The buttons on the right side of the treadmill console are inoperable. The left side buttons operate as expected. After removing the panel and inspecting the ribbon cable that feeds the right side buttons it appears that the contacts are burnt (browning in one area across the cable). See pic below.

    Can anything be done to repair the leads on this ribbon cable? De-oxit, 99% alcohol? Steel wool?

    Failing that, can it be spliced? Cut out the bad section and piece it back and solder the contacts together?

    Thanks in advance. Pics follow:

    [​IMG]

    [​IMG]

    [​IMG]
     
  2. Harald Kapp

    Harald Kapp Moderator Moderator

    9,033
    1,809
    Nov 17, 2011
    Cleaning will improve the optics, not the electrical conduction.

    It will most likely be too short after that operation.

    Your best option is to get an original spare cable. If that is not available, you can try to repair the cable as shown in this video.
     
  3. duke37

    duke37

    5,189
    704
    Jan 9, 2011
    Do not go near it with steel wool. One little loose strand could be disastrous.
     
  4. Bluejets

    Bluejets

    3,360
    670
    Oct 5, 2014
    Normally these ribbons will crack and break.
    Have never seen one with a short section which appears to have overheated.

    I'm guessing somehow the cable has "corroded" internally (within the plastic shroud) just in the area of the "overheat mark".
    There seems to be "internal corrosion" on adjoining conductors as well.
    If it were a short or the like (faulty component ), the whole conductor would be the same over it's entire length.

    Only options are to get a replacement part (probably never get one) or rewire with hook-up wire individual conductors.
    I watched part of the supplied repair video (yuk) .....don't like that idea at all.
     
  5. vestaviascott

    vestaviascott

    59
    0
    Jul 28, 2013
    This is a double layer ribbon cable. The cable on the top has two silver colored leads on the left side and one on the right. The cable below is where most of the damage appears. It appears to have 6 copper leads running through it.

    Question? Perhaps I'm miscounting the number of leads in the wire, but this side of the console has 10 buttons for the speed controls, one for the Stop control, one for fan, one for "display" and 2 for up and down speed. Why does this cable not have 15 leads in it?
     
  6. Harald Kapp

    Harald Kapp Moderator Moderator

    9,033
    1,809
    Nov 17, 2011
    Because keyboards are usually built as a matrix, see e.g. here.
     
    vestaviascott likes this.
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