Personally, if you really wish to repair your notebook, laptop or personal computer (PC), the most popular place in Singapore is Sim Lim Square (Rochor MRT station – Exit via A). Just shop around for quotes.
Nowadays, it is quite easy to troubleshoot your own laptop. Just head to youtube and type the keyword:
troubleshoot laptop [your problem]
If it is small issue like speakers, camera, just get an external speakers or camera. If it is an expensive issue like motherboard, just go to website like shopee, lazada, qoo10 or carousell to get a cheap one if you do not wish to spend too much money. The cost of motherboard replacement is as good as purchasing another laptop.
For example, I just type laptop on shopee and managed to find an Intel I5 Used/ Preowned/ Refurbished Lenovo Laptops for only 199 SGD (at that time of search). The vendor warranty is for 1 month.
Do read the Buyers review of Seller and buy at your own discretion.
I prefer the big 3 online shops which are shopee, lazada and qoo10 as you can request the seller for a one to one exchange after you test your laptop for any genuine defects before your order confirmation.
Therefore, once you receive your laptop, notebook or personal computer, test it for 24 hours. Surf the web, test the sounds, keyboards and camera etc. Any defects, take pictures or videos as proof. Upload the data and call their customer service if no response from seller as it is still within the one to one exchangeable timeline.