Main Brush motor not run_Neato Botvac D4 Connected

Dear friend,
Sorry I just can write in English.
Please help my Neato Botvac D4 Conneted : The main brush didn't work.
I openned it to check
I used external power to test the Main brush motor
Unfortunately, it burnt the L20 as in the picture. I joined 2 sides of L20 thenthe motor ran but it caused the 2 wheels not work
I disconnect 2 sides of L20 then the 2 wheels work again

Please help me to find the inormation of L20 for meto ind the replacement
I attach here the picture of another L17 , L18 that also used to connect to the blow motor
Thank you so much !

Fichiers joints

IMG_20201109_205007.jpg (286.69 Kio) Vu 2069 fois

IMG_20201110_215426.jpg (114.4 Kio) Vu 2069 fois

IMG_20201110_213759.jpg (122.26 Kio) Vu 2069 fois

Thank you for the discussion about motor card replacement. There are lots of things are planted on the PLC card and the professional can solve the problem. I hope the various other people are happy to solution and able to fix the motor card.

Lots of things are hidden on the PLC card, but an expert can figure out how to fix it. I'm crossing my fingers that everybody else is thrilled to solve and able to repair the motor card.