Do It Yourself: Yes
Note: Not much DIY steps here coz I need it to be done quickly. It was race against the rainy weather.
It is about time my audio amplifier busted. It was due to dry joint developed throughout the years. Dry joint is a term to define any soldered contact point in any electrical PCB which no longer provides a good conductive point. Hence, in my case, the amp acted badly with sometime only one channel producing audio. Out of blue, the volume will skyrocket or pitfall.