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Need help to fix old RC controller

Discussion in 'Microcontrollers, Programming and IoT' started by Ralf Kalkuhl, Dec 13, 2016.

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  1. Ralf Kalkuhl

    Ralf Kalkuhl

    7
    0
    Dec 13, 2016
    I dont know anything about circuits i just need help to solder the negative wire back to the board i just dont know where to solder the wire on the board any help would be appreciated.
     

    Attached Files:

  2. Harald Kapp

    Harald Kapp Moderator Moderator

    10,395
    2,271
    Nov 17, 2011
    Show us an image of the back of the pCB.
    It may also help to know which chip is under the label "Modul Nr. 40018" as knowing where the chip's ground pin is helps identifying the trace to the wire pad.
     
  3. Bluejets

    Bluejets

    4,227
    897
    Oct 5, 2014
    Good chance that the negative sign (-) on the electrolytic capacitor will be the negative rail.

    It's the can looking device between D3 and R8.

    Nice clear photo of the reverse side of the board would help also.
     
    Harald Kapp likes this.
  4. Harald Kapp

    Harald Kapp Moderator Moderator

    10,395
    2,271
    Nov 17, 2011
    Good hint.
     
  5. Ralf Kalkuhl

    Ralf Kalkuhl

    7
    0
    Dec 13, 2016
    Here's a pic of the back and the chip
     

    Attached Files:

  6. Ralf Kalkuhl

    Ralf Kalkuhl

    7
    0
    Dec 13, 2016
    thanks guys i actually got it working again the ground rail was on that can thing
     
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