Need help with first turbo :(

[RX-PHIL]

Hey all,
rite i had a problem with the second turbo not working so i ordered new vacuum pipes, stripped it down and fitted new pipes to what i cud reach and to any of the old piping i found loose, put it all back together and went for a spin......i now have no first turbo but the second one is working perfectly, i know the second turbo shudnt work if the first one isn't but this is whats happening........i have stripped off the intake manifold again and checked all pipes and their locations making sure i put them back in the rite position and as far as i can c im good.........
if any one has any input to solve this problem, it is very much appreciated

thanks in advance
Phil