Pure Chronos II - Reduce display brightness

If you have a Pure CHronos II clock by your bed and like me are very sensitive to light it can keep you awake even on its lowest brigtness setting. This instruction significantly reduces the brightness.

You will need:

Small Philips screw driver.
Side cutters
Soldering Iron
Insulation tape
A red LED forward voltage approx 1.5V  (or signal diode if you don't want it as dim, forward voltage approx 0.6V)
Multimeter (or try the LED both ways round)

Step 1 Remove the bottom

Open the unit up. To do this turn it upside down and remove all the philips screws in the bottom. There are 9 screws; 3 at the front, 4 in the middle and 2 at the back. 

Ensure you have unpluged the unit from the mains supply before you take it apart.

Note the two screws are hidden by the cables at the back of the unit don't forget these (Like I did) as it won't come apart untill they are all removed.

Once all the screws have been removed gently pull the back off. There will be some resistance and there are two cables still attached to the back (the antenna cable and a combined multiway cable to the power inlet and the USB) so don't pull two hard.