I do not like to take a laptop apart unless we believe the laptop to be dispensable. I did find a good video on how to take this one apart.
(Laptop model L355D; cable V000140130 Toshiba phone 1-800-331-4829)
I was able to dissemble this unit. One screw failed to remove and broke the metal insert from the plastic upon loosening the screw. But the remaining 20 screws removed properly. So I was able to remove the keyboard and then the whole top showing the motherboard. Then take apart the screen assembly. I did break out two screws near the hinge which I think was my fault of not removing them early enough. But I did get the new cable installed and all back together and it looks like it works perfect and opens and closes normally.
Maybe a few more years of operation?