You probably broke the through-hole plating in one or more of the
holes. I
usually use machined pin IC sockets so I can solder them on both sides to
make sure the top and bottom layer connect.

thanks james.

it didnt occur to me that you had to solder the top part too. in the
end i removed the cheap socket i had and soldered on both sides the
chip directly on the board

its working great now.

thanks again