New display card not working

General
1

Please make sure to click on General above and select the correct appliance type first.

Brand:GE
Model Number:PSB1201NSS01
Main Symptom:display flickering / erratic
What happens & when:Purchased new display card WB27X10856. When new card plugged in and microwave plugged in, the display stays blank (like a dead card) and I hear continuous buzz clicking self test noises from microwave continuously till I unplug the microwave. When I go back to the original card, the display lights up and I get about 5 seconds of self test noises then the display asks to set the time. Display flickers but everything works. Same scenario with 2 different new display cards.

Error Code (if any):
Parts or tests already tried:Display card WB27x10856
Photos / video link:

2

Same here, but my model number is a PSB9120SF1SS. Original one I am trying to replace will work, microwave/heat the food/liquid, but a flickering screen. The buzz you hear is the turn wheel for the magnetron’s vent fan door. Any help you have had that isn’t listed here would be great to pass on to me please.

3

Figured it out. The new digitron has a different firmware than the original Power Board. Before you buy a new Digitron WB27X10856 buy the power board WB27X10861. The new Power Board will work with the new or old digitron you already have. But only a new Digitron will work only work with a newly purchased Power Board, but you might find out the old digitron still works and really the only problem was your Power Board.

WB27X10861 (AP3882298