I have had problems with the stepperdrivers so I replaced all with other DRV8825 drivers.
Now when i put the plug in the wall the led display lights up for a second and then goes dim.
Also all heater leds start burning immidiately and keep burning.
If I disconnect the flatcable to the extruders it does not make any difference.
What where your problems you had with your drivers before you swapped them?
What parts did you use to replace them with?