If you have an LG washing machine and it is displaying the error SE it might be indicating a “motor fault”. However, there’s no easy fix as you need skills to diagnose this fault.
The technical information also says this fault could be caused by a main PCB fault. They recommend to, “try the motor first”. Like many error codes in the white goods industry, it’s vague and not too helpful, especially for a DIY repairer. So you really need an engineer to try and sort this one unless you know how to check the motor and its connections.
is there anything to check?
You can’t possibly justify “trying the motor first” if you interpret that as buying and fitting a new motor. They are way too expensive to gamble on. Buying and fitting a new PCB is equally not recommended. If you at least know how to test a motor for faults and check its connections and the carbon brushes (if fitted) it’s worth a look.