The LG 3850EA3100W refers to an LG component/part number (likely a power/control board, PCB assembly, or appliance replacement part). This study examines its identification, specifications, functionality, compatibility, diagnostic procedures, repair/replacement processes, sourcing, safety considerations, and testing. Assumptions: the part is an LG appliance electronic module—adjust the specifics if you have a different part context (e.g., HVAC, TV, washer, refrigerator).
The display lights up and you can select cycles, but pressing "Start" does nothing. This suggests the logic circuit on the board is not sending the execution command to the motor or water valves.
The LG 3850EA3100W is an OEM (Original Equipment Manufacturer) Main Electronic Control Board (often called the main PCB or motherboard) designed exclusively for select LG washing machines. lg 3850ea3100w
This component serves as the "brain" of the appliance. It controls every function, from water intake and drain cycles to drum rotation, spin speed, and temperature regulation. Without this board, the washing machine cannot operate any program or respond to user commands.
It is critical to note that 3850EA3100W is an LG internal part number. Third-party suppliers may use slightly different codes, but the authentic LG part will always display this number on its own label. Create pass/fail criteria and measurement logs
OEM replacement part compatible with select LG appliances; durable, precision-engineered to restore original performance and fit.
The 3850EA3100W is not a universal part. It is specifically programmed for certain LG direct-drive washing machine models. Always confirm your appliance’s model number before purchasing. The LG 3850EA3100W refers to an LG component/part
This board is commonly found in the following LG washer series (usually manufactured between 2012 and 2016):
Important: Even if your model number appears on this list, you must verify the "Rev" number printed on your existing board. LG often releases revisions (e.g., Rev 1.0, Rev 1.2, Rev 2.0). The 3850EA3100W usually corresponds to a specific revision range. Replacing a Rev 1.2 board with a Rev 2.0 board may work, but it’s safest to match exactly.