I notice this morning that my radio sounds a bit funny and after a while I notice there was no sound coming out from the front left side speaker(mid speaker and tweeter). I confirmed this by tweaking the fader and balance. Is my internal amplifier spoilt or could it be an internal wiring went wrong? Everything else is working fine except the above mention problem. Is dead internal amplifier a common sign of HU old age? The vios HU is already arnd 3.5 years old.

erm....bro...pls check the wayar have conect ant???coz i met dis problem few day be4

oh found out it is wiring problem, the connector side is lose.

Now working ok.