Workshop: Repairing a Bosch IXO Screwdriver
If you have a Bosch IXO screwdriver that only works in one direction, then there is probably a loose contact on the main circuit board. To repair the fault:
Remove the 4 screws from the chassis using a T9 screwdriver, and then remove the rubber end piece from the tip of the driver.
Remove the outer plastic and expose the circuit board, then remove the circuit board from the chassis altogether.
The problem will be in the direction switch, which is located at the motor end of the circuit board. To fix the problem, you will need to bend the pins in the switch slightly so that they make better contact with the switching mechanism. If bending the contact pins does not fix the problem, you might need to build up the pin by applying a layer of solder.
If the screwdriver is not running in either direction, then the problem is more likely to be the trigger. Replace the micro-switch using a compatible replacement (some gluing might be necessary if you can not find an exact replacement).
Reassembly is the reverse of disassembly.