ZK-MT21 TPA3116 Aux Jack

Hello,

Recently bought this TPA3116 board and I wanted to replace the onboard 5pin AUX jack to a regular 3pin jack to route it somewhere else, and during the process of unsoldering the onboard PCB aux jack I broke one of the solder pads, but thought it would be alright since the main L, R, ground pads are intact, connected these pads to my 3pin aux jack and the amp now only produces static noise.

I have no idea how these 5pin jacks work, could somebody explain how do I fix this problem?

I have attached the current and original state for reference of the aux pads.
 

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I believe you will not have the left channel with that connection, the broken pad of the solder is connected to resistor R3, the left channel wire must be connected to R3. The correct side of which to connect is the side towards the broken pad
 
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Short the yellow line pad and you have sound out.
I believe you will not have the left channel with that connection, the broken pad of the solder is connected to resistor R3, the left channel wire must be connected to R3. The correct side of which to connect is the side towards the broken pad

I've done that, there is sound out now but there is audible noise in the background unfortunately. Any other ideas?
 
Difficult to find the cause just as it is easy to have buzzes and hisses. Other than keeping unshielded wires as short as possible and checking the ground, I'm not sure what to recommend. I had a hum that disappeared when I lifted the TB21 off the PSU a bit.