Opening up an older bottom timer to get it working (pic)

[scubasteve65]

This is an out-of-business US Tech depth/time/temp gauge. Perhaps only for tinkering purposes, how would I go about opening this up? or can I? It appears that the black back is glued to the unit. I realize it has little to no value, but I would still like to open it up and perhaps get it working. Thanks in advance

 

[knowone]

Digital

 

[scubasteve65]

"Digital"? I'm not sure I understand your one word reply.

 

[gsk3]

My understanding is that you have to replace the mineral oil inside them, which is messy but doable. HOWEVER, once the power is disrupted they will not work again even with a new battery, so the procedure must be done carefully and before it is truly dead.

 

[Tortuga68]

Looks like an Uwatec. They're sealed. No battery replacement

 

[Texfrazer]

Knowone,

I bet he doesn't read Czech, thus, he can use this link to get to the instructions for changing the battery in a digital depth guage.

 

[Tortuga68]

Thanks for the links, didn't know that

 

[scubasteve65]

Thanks for the link. Too bad it's dead already. May open it up just to have a look-see anyway.

 

[tadawson]

From the picture, it looks like there is an O-Ring on just behind the face, which would make me tend to think that the clear face and black back unscrew.

While not the same, I have an old Sherwood bottom timer that I have had apart for battery replacements many times, and that continues to work.

If it won't work after a battery change, how did it work in the first place? That statement frankly makes no sense at all . . . Especially considering that this was back when software on stuff like this was mostly regarded as a bad idea - all implementations were in hardware, so what is to be lost on a power failure? Worst case, find the reset contacts to light it up again . . .

Myself, I'd give it a try as well. Absolutely nothing to lose . . .

- Tim

 

[scubasteve65]

Hi Tim. No O-ring. It's glued shut. Look up at the earlier link from Texfrazer. It's exactly the same as those pictured by the author. I'll probably open it up just the same. It makes sense about them going completely dead. Built in obsolescence.