Oceanic Prodigy Puck computer disassembly

[tokashikibob]

Hello, I have 3 vintage pucks and would like to get to the lcd board to clean the contacts as the black digits are faded. the pucks look to have 2 orings to overcome to get the back off. Has anyone done this, does the back screw off?
Best regards, Bob

 

[DivingAroundAsia]

I've just picked up an old Oceanic Veo 180NX which is passingly similar (puck, single button), which I need to open up to replace the broken button spring.

Have you had any luck on dismantling yours?

 

[jadairiii]

Only use the hammer on the workbench as a last resort.....

 

[Couv]

Judging from these two pictures, I would say a strap wrench on the body and a pin spanner on the back ought to do it.