GE Microwave ZSC1201J1ss display flickering

Microwave Repair
1

Brand:
Model Number:
Main Symptom: display freezes/flickers
What happens & when: MW is 10 years old. Flickering intermittent

Error Code (if any): none
Parts or tests already tried: none. Looking for what board to replace.
Photos / video link:

2

It would be recommended to test the transformer and if it is good then replace the digitron.