u sure copies r good copies (ever booted them before?)
if origanls still loading its doubtful u have bridged any soldering
ps1 games load in with a double click of reset button
ps2 loads in single press reset button
dvd movies load with double click reset button
try ps1 games only 4 wires r for ps1(
www.china-messiah.com)if not boot check site for 4 wires it uses
if they load and ps2 dont then its wiring problem is with other 19 wires