Need dive computer help

[Masonsmom]

HELP.... Anyone who knows how to operate a dive computer? It's a UWATEC SMART COM dive computer, very, old very ...only used twice, don't have manuel, tried online, so very confusing. I'm trying to sell but I'm being asked if it powers on, don't know how....I'm a female, only used all my scuba gear ( have everything) twice. I bought years ago with old friend who I don't speak with anymore who new how it all works. Any help appreciated. Thank you Cheryl

 

[GreggS]

Don't know if this is for the computer you have but here is a manual: Uwatec Smart Pro Manual

 

[fmerkel]

If it's really old it's likely the battery is dead. If it is gray and kind of square with some brass bumps on it, those are water contacts. Wet your fingers and touch them all, or simply dunk in water. If the battery is good, it will start. If not...dead. These are not easily user replaceable. These folks will do it for $50.
Uwatec battery replacement service

 

[Masonsmom]

Don't know if this is for the computer you have but here is a manual: Uwatec Smart Pro Manual

Thank you so much.