I called up Wing and they sent a technician. He said that he needed to replace the electronic portion of all the fans (before he even check or take a look at a single fan). Looked like they knew it all along that the problem would be the electronics.
To replace the electronic part, I need to pay RM60 for each replacement, and I need to give them back the old electronic part. I asked him why need to give back the old part, he says it is their company policy. WTF!!!



In the end, I only replaced 1 fan and decided not to replace the rest. Lets just say, I will NEVER ever buy a Wing ceiling fan again or any Alpha products again. Ptui!