People entering the field of macbook repair Singapore need to do quite a bit of research to find all the tools they need to be able to fix the long list of problems that computers and laptops face. When I first started, I used to carry a huge toolkit full of all sorts of devices. The bag itself looked pretty impressive and had almost anything you might ever need. But as time went on, I discovered that 99% of the issues you need to resolve can be taken care of with just a basic set of technical equipment.
If you are going to perform laptop repair as well as desktop services, I recommend carrying a precision screwdriver tool kit. They cost somewhere around $10.00 and they are by far the most useful item I carry. Laptops and Macbooks especially tend to use really small screws to hold components together. Small torx screws are pretty much an entry barrier for new technicians who don't have the experience to know that they even needed a small torx screwdriver.
The second best tool for computer repair is a USB stick. You can store every single program you will ever need to troubleshoot a computer problem on one little stick. I store multiple types of anti-virus programs, anti-malware programs, rkill utilities, Hijackthis installations, popular browser install kits, data back up software, data transfer software and recovery programs. On top of storing your repair software, you can also use the USB key to transfer drivers and other files that you often need to download on-site.
While the USB stick and the precision screwdrivers will get your through 90% of your problems, you will need a very diverse kit for the remaining problems. You'll need to get a CD pouch full of operating system disks and manufacturer recovery disks. Don't forget that you'll need one of each kind for both 32bit and 64 bit operating systems. Then, you'll also need to carry a power supply tester for computer repair. On the laptop repair side, you will need to invest in a voltmeter to troubleshoot inverter problems and dc power jack issues.
Finally, the last additions to your toolkit will be standard technician items. Flashlights, measuring tape, thermal paste, electrical tape, extra screws and more... Most of these tools will rarely be used. But when you need them, you'll really wish you had them. As you get more comfortable doing computer repair, you'll be able to custom tailor your kit to your personal preferences. With enough experience, you might decide to add soldering iron and a heat gun for more advanced board level repairs.