A2760 help

Hi all

I’ve got an old school DSE A2760.
I decided to remove the pre-amp module and make a few mods following the guide here.

https://www.overclockers.com.au/wiki/DSE_A2760_Amplifier_Modification

Now that I have put everything back together I’m actually getting no audio output 😭

Looking for support on what I should be checking to fault find. I have checked across the whole underside of the board. Nothing looks suspect.
Amp powers on fine. Only volume control I’m using is via the PC and verified input cabling is fine.
I can actually hear audio but it’s very very quiet. Ramping the volume on the pc makes no improvement.