Don't forget to unscrew the two screws underneathe the two rubber things or sockets under the TR3A with arrows pointing at it, and there was also one last screw that i almost didn't see... and it was the screw on top of where the fan is located, with mine, it was hiding underneathe, what i believed it to be a tamper seal sticker. mine was the color of silver grey like the laptop, it was like hard to see for me.
I am also trying to replace the Hard Drive with a much bigger hard drive most preferrably 100 gb and above, but i don't know which Toshiba Hard Drive fits the TR3A the size of 1.8... there were 60's 80's 100's and 120's i've found online and even a 160 somewhere. But do they work if i put those later model Toshiba 1.8 inch HDD if i install them, cuz the specs a a bit different.
I probably have to replace the Fan soon as well. Where do you get your parts for the TR3A?