94 Audi cabriolet can't get the top to release when I turn the t handle manually, or with the switch is there another way or something else to try

SOURCE: My Audi A4 Cabriolet top will not go down.

http://www.autozone.com/shopping/repairGuide.htm

SOURCE: 1995 audi cabriolet speedo not working

Did Audi scan for diagnostic codes? there are codes in the range P0500 - 03 and P0720 - 23 if there is no codes check for a bad wire from the MFI ECM, It is a white/blue wire (B9 on the ECM) to the internment cluster or maybe an other ECM. Hope it may help

SOURCE: manually retract convertible roof on 95 cabriolet

Open roof latch over windshild.
Raise rear of roof off of hatch
Lift little hatch tabs to access lift mechanism
Release latches on each side with fingers
Lift Hatch with free hand
Let roof fall into storage compartment
Click hatch shut.
Reverse proceedure to put back up.

SOURCE: how to take off a 94 audi cabriolet door panel

You'll need to remove screws that are by the door handle, arm rest, under door and side of door and then gently pull back on the panel as there will also be retaining clips attached and you don't want to break them. If needed, you can pull back the weather seal (can't reuse it, but it's not that important) and you will be able to access everything inside the door

SOURCE: Can I bay repair manual for AUDI 80. 2.6E 94

Haines produce a Manual for these, go to your local book store or Auto parts shop or "Online" Google Haines 94 Audi.