Display flickering/ replaced part/ indicator lights not working

Oven/Range/Cooktop Repair
1

Brand:Samsung
Model Number:NE59N6630SG/AA
Main Symptom:Display flickering

What happens & when:replaced display with your part. Display does not light up and range top indicator lights now not working.

Reinstalled old part. Still flickers but range top indicator lights now not working.

Error Code (if any):
Parts or tests already tried:
Photos / video link:

2

That sounds like you have a failing control board DG92-01069B.

https://www.appliancepartspros.com/samsung-assy-pcb-sub-dg92-01069b-ap6808231.html