I have a very similar problem, c.f. PNY CS 1311 SSD doesn't work attached to internal HDD cable. Why?. I've noticed from other fora that this model of MBP has similar problems with certain SSDs, largely as a function of the controller – there are lots of complaints about Seagate Sandforce chips. My problematic PNY CS1311 uses a Phison PS3110-S10-X; your Corsair LS 240Go has a Phison PS3108. Perhaps that's a pattern emerging.
I had a lot of trouble getting the home button cable connector back after replacing the screen and shield. I wound up disconnecting the shield to give the screen side of that connection a little more play and enable the connection to be made.
Incidentally, if you want to take off just the shield itself and not the outer cables, you can skip 19-35, except the outer orange screws in 19 and the outer orange screws in 26. It might make getting under the shield adhesive harder, but in the case I described above, it was quite useful!
I had a lot of trouble getting the home button cable connector back after replacing the screen and shield. I wound up disconnecting the shield to give the screen side of that connection a little more play and enable the connection to be made.
Incidentally, if you want to take off just the shield itself and not the outer cables, you can skip 19-35, except the outer orange screws in 19 and the outer orange screws in 26. It might make getting under the shield adhesive harder, but in the case I described above, it was quite useful!
Absolutely true. The cheap Y000 driver that came with a repair kit was stripped to uselessness by the time I got to the shield screws.