Hi there!
Do not worry! Do following:
0. Remove turbo from amiga
1. Press all chips which are place in sockets on the turbo.
2. Assemble turbo.
If this will not help try:
0. -"-
1. bend the metal legs of the socket for MC68k towards inside. Be careful - they are easy to destroy.
2. -"-
Most of all - if your turbo was several times removed and then assembled into A600 - you will have to make several attempts to get it working correctly!
I have had the same problems with mine. Nw it works perfectly.
Good luck!!!