NV51K7772SG (AA) Samsung Wall Oven

This oven has two fans that counter rotate. One spins clockwise, the other counterclockwise. Because of this, the motors and the fan blades are different. The schematic shows the counter clockwise rotating fan with a right hand threaded shaft/nut on the bottom and the clockwise motor and fan with the left hand nut on the top. My range ... Read more had the motors in the exact opposite orientation, but the fan blades on the motors as shown on the schematic. The incorrect assembly at the factory (I bought new in the box, so I know this is the first repair) meant that nether fan blade was turning the correct direction. So do yourself a favor, be sure you’re buying the right motor (clockwise or counterclockwise) and be sure you put the right fan blade on the right motor. The Samsung motor ending in F is the counterclockwise motor that has the right hand threaded shaft the clockwise motor with the left hand threaded shaft ends in E.

Slide out the stove. Unplug the electricity. Remove the back panel with a screwdriver. Then go inside the oven and remove the two Philips head screws holding the fan cover. Then remove the nut holding the fan. Note, it is a left handed nut, so turn it right to loosen it. Pull off the fan. Return to the back and remove the nut and two scr ... Read more ews that hold the fan. The fan slides right out. The only problem I had was that the electrical contacts on the new motor were wider than the original. I had to break the plastic so I could separate the wire leads, so that they would fit the new motor. Works like a charm.
John

Other tools that are usefull long needle nose pliers, long thin blade screw driver and small magnetic flashlight. Place the microwave on a work bench and remove the case it cover 3 sides. Place the microwave on a chair so it can stand with the controls up. You are replacing the lower door microswitch. The switch is located behind the ... Read more control panel in the lower part of the area. The switch is several inches inside this area and your hands will not fit. Take care when moving wires and a couple of sensors. Use the thin blade screwdriver to release a tab holding the switch in place. Do not break this tab. Take the needle nose pliers and remove the switch. Put the wires on the new switch, open the door a short distance so a door lever moves enough to put the microswitch back into the bracket.