Red line across all superior zone of the panels


    Im having the red line problem in my panel chain. 
    I have checked and re-checked the Pi Gpio connection and (obviously) if i take out R1 pin the red line 
   dissapears (also red color).

    Im using 3 32x32 panels in one chain, a 3B + Pi and my C# code is:

new RGBLedMatrix(new RGBLedMatrixOptions { ChainLength = 3, Cols = 32, Rows = 32, Multiplexing = 1, GpioSlowdown = 4, ShowRefreshRate = false})

   ![Red line](

   [Panels link](




What im doing wrong?