No volume from audio system [GS300 - 2005]

crawleybee · February 7, 2017

Have suddenly lost all volume from my GS300 [2005] audio system. Can rotate the volume knob any way but no volume scale/level shows [as would normally be the case].

The rest of the display seems normal - just no sound in any mode. Thoughts?

Neil E · February 9, 2017

I would check the amplifier has power and connection to the head unit first.

Test to see if you can switch to the fader and tone levels.

crawleybee · February 10, 2017

Hi Neil, Thanks for response. The problem with the volume seems to be intermittent. It is okay today - tomorrow?? Will see how it goes.

Where is the amplifier located? Please clarify what yo mean by "head unit". Thanks.

Neil E · February 13, 2017

Hi Robert, intermittent audio issues with those symptoms are quite common. It's often a fault with the amp but occasionally it can just be a poor connection at the head unit or the amplifier.It's rare for it to be a fault with the head unit but it can happen.

The head unit is the part with the display and volume control, etc, it sends the source signal to the amplifier. The amplified signal is then sent to the speakers. The multi channel audio amplifier is usually in the boot. Is your 2005 GS a Gen 2 or Gen 3? If it's the amp, they can usually be tested/fixed by a company in Edinburgh. Huets in Brighton would be the only 'local' resource that I would recommend to help determine where the fault lies.

I haven't owned a GS for a few years, (they were both GS430s so slightly different, does this diagram help?