1st I did not find the part to fix it, so I epoxy-ed it, it was OK for a year, then broke again. This time I found it (cause I discovered this site when repairing GE Stove display).
I bought a couple of them hinges, cause it seems like bottom hinge breaks a lot - mostly when you close left door with the mullion (flap) turned and right door is closed - mullion will bang on the right door and hinge goes.