I would like to recommend Power Buy to everyone that is living in Thailand and is buying anything from a Vacuum cleaner to a Video cam. They have great service and they belong to the Central group so if you buy the C Card for 50 THB you get Points when you buy something. But the best thing with them is the warranty for 3 years you can get. I have not see this anywhere else in Thailand. It will cost you a few percentages extra but its worst all the extra hassle you get trying to get something repaired in Thailand. If they can not fix it they will give you the money back. Even if you can save a few 100 THB in Pantip I really recommend the closest Power Buy shop and my favorite is the one in the new World Trade Tower.
Yes they are pretty ok faster then they tell you. Most shops are like that except the car shops they are so slow.
Are they fast to repair your items ?
Thanks.