I saw one video where they replaced the non functioning thermostat in an LG fridge with a digital one. They were using a cordless screw driver in that.
Also saw how they show how to replace the oil inside a compressor. This channel is nice to learn stuff. Practically if anything went wrong with a fridge, i would give it to a repairman since they have a the tools and they do the job everyday and will probably finish the job in less than two hours.
Edit: LG advert on their direct drive generations.
The 'conventional' DD we get here isn't too bad. Place a glass of water on a properly leveled machine when its on the spin cycle and it does not move. You see a few ripples in the water but that's it.
Also the sound drop from 75dB to 67 dB isn't a whole lot. If it was down to the low 50s then it would be more significant. In any case with my machine in the bathroom and the door closed i don't hear much.
Availability seems limited for Centum for some reason. That's for a 12kg machine