Parts for Ge PVM9179DK2BB: Control Parts

The Black Knob is an OEM replacement part for GE microwaves. It refers to the rotating dial or knob used to select cooking power levels, timers, and other settings on the microwave control panel. As an integral part of the microwave's control interface, the knob is subjected to frequent handling.

Causes of a bad knob can include wear and tear from repeated use over the lifespan of the microwave. Excessive grime or grease buildup that is not properly cleaned may also deteriorate the knob surface more rapidly. 

Symptoms of a bad black knob include:

• Loose, wobbly, or difficult-to-turn knob mechanism  
• Knob cracking, splitting, or breaking off the stem
• Numbers, letters or other indicators on knob face fading or wearing away
• Knob no longer staying securely in desired settings

This genuine GE black knob is also compatible with some Hotpoint, RCA and select Kenmore models.

The Main Board is an OEM component specifically designed for GE microwaves. It acts as the central control hub, processing all commands and regulating the critical operations of the microwave. The main board monitors the magnetron tube, controls fan speeds, and facilitates user-friendly programming of cooking presets. 

Symptoms of a bad main board include:

• Magnetron failing to ignite or powering off unexpectedly  
• Inability to set or change cooking times/power levels
• Temperature sensors malfunctioning
• Display/control functions acting erratic or unresponsive
• Microwave not heating or partially operating

Causes can stem from power fluctuations or physical damage over time. 

This OEM GE replacement part is compatible with Hotpoint, RCA and select Kenmore models as well.