There are also such tools and repair manuals, then watch online on available products and learn how to do it. . While actual repairs can be completely removed from your league, the transfer of parts is only fully qualified. First of all, find the online parts. With a quick internet search you can easily buy IP phone Singapore parts online. After that you can easily point towards a particular piece.
Here is the hardest part. Sometimes you are absolutely sure that the changes you want to make can lead to a professional or educate yourself online. In that case, the first step actually is to diagnose the problem. Thank you, online information is a wealth that can help you with this.