Baader Laser Colli Mk3 troubleshooting

[AlentejoSkies]

Good afternoon.

I have a nice Baader laser Colli MkIII that has unexpectedly stopped working and I'd like to open it up and clean the switch/check the contacts and so on. But of course I'd like to keep the alignment. Before I jump in - did anyone else already take one apart, and if so, do you have any tips?

PS. batteries are good, polarity correct, visible battery contacts clean. Current draw is too low, at about 1mA, and not stable.

[AlentejoSkies]

So, in answer to my own question:

Coming in from the battery case, removing the slotted retaining ring opens the switch module (take care, springs included). Coming in from the other end, circlip pliers takes off the aperture/protection cover over the laser, which itself can be removed by loosening the 9 grub screws hiding under the rubber sleeve. 6 of these grub screws hold and align the laser module, and 3 hold the battery -ve contact in place. The laser diode module appears to be a standard 3V module, which I will now try to replace as it seems to be the part that has failed.

Nicely designed and made.