I have been using a shocker since the new version was introduced in 1998, wouldnt swap it for anything else currently.
The switch for the turbo is inside the shocker, not on the front (the front switch was for select fire versions). Which model board do you have
DS type:- has a small red led at the front of the body
LS type:- Has a on/off switch and green led on the side of the body
I dont think the LS came with Turbo mode (i could be wrong), if you open it up (mind the wire to the solinoid), inside if its a DS board you will see 2 banks of switches, these are used to set the timing. If you hold the marker with the front facing away from you the bank on the left hand side the very bottom switch is the turbo on/off switch. Another big give away on the old DS turbo board is the large white plug on the right side of the board which is the view loader control.
For spares in the uk your best of speaking to Phil or Nick at Smart parts Europe on 01322 555968 or
www.smartpartseurope.co.uk
welcome to the Shocker family, if your ever at a torney and im there, i should be able to sort most problems with your shocker out or at least tell you whats wrong.
Cheers
Bruce
Team Detritus or Freak Show