non solder chip don`t work

[ThugFxp]

i have just purchased a non solder chip. for my V4 psx2
only becasue the warranty has just run out !! hehehe

Now it is installed. i have tried backups of the following games.

Rocky
SSX Tricky
Virtual Tennis
Gumball 3000

Non of these games work at all.

Rocky boots as far as the title screen then locks up. smae with Virtual Tennis, the other 2 dont een begin to work.

I have heard that these non solder chips will only work on games under 650mb ??? is this true.
Have i been had.

Should i remove the chip and buy a messiah.
Any help would be greatly appreciated
Many thanks in advance