the wires inside the remote controller cord are damaged internally..
i used to work if i twist the wire somewhere

...but that stopped working...
there were no cuts on the cord which could lead to that..
maybe the ground wire got corroded.. it kinda had no insulation ..
so i cut the cord from the controlling unit..
can connected all terminals manually on the pcb.. it works..
the ironic issue is that the speakers should not work when headphones are plugged in...but its the other way around

infact the controller doesnt show power LED ON until i plug in any headphone connector.
will post some pics in some time to clear out what i have done.