Hi! Great to hear I am not the only one messing with a 5300.

Well the PowerBook 5300 series and its relatives are quite prone to damage from use. Hinges especially.

You can try to use some case parts from a PowerBook 190 which is very similar in design.

Use epoxy wisely!

The stupid part about the 5300 is that the video cable to the monitor is twisted around the hinges. Mine is damaged (a little bit snapped) and the monitor sometimes keep blinking in brightness...