I have a Bose SoundDock series 2 but the sound processor blew up..I want to find out if I could just use the amplifier board alone
My question is
Where can I :-

1.connect the switch to turn amp ON
2. Connect power supply
3.connect audio input left and right
4.if possible the volume controls as well

 

The Bose SoundDock uses an iphone as its input. The processor that blew up probably converts the digital signals of the iphone to audio for an amplifier.
Why do you think the bunch of capacitors is an amplifier?
A stereo amplifier needs to have left in, left out, right in, right out, positive voltage and ground. That is 6 connections but the circuit board has only 4 connections on its two connectors.

You need a detailed schematic to show the inputs, outputs and power supply but Bose will not provide it.

 

I am too stuck on the same problem,
1)first we need to change to another amp and connect the speakers and see.
2)speakers are 8 ohms and 15W each i guess.
3) Bose amp needs same sound processor and Bose proprietary cable
4) tried with other 18 pin cable, didn't work.
5)this model always had complaints with sound processor.
My bad, I disconnected the sound dock from power supply and since then its not working for me.

 

with what we see in the photo, IF the connections to external things had been left intact it would be possible to reverse engineer and if the circuit on that board was not damaged, possibly have something that worked.
With no hint as to where the other connections were, or which they were, there is no way to guess.