I can only imagine how frustrated free-electron is, having spent a princely sum for a computer, but thankfully his experience has not been mine. Two years ago, my daughter and son-in-law gave each other one and they have over 200 dives each on them in two years with no issues. I bought one for my wife based on their great experience and she dove 17 dives in Coz with hers and loves it. Hopefully, it will continue to perform on the liveaboard we have set up in Cayman in September.
It's not so much the cost of the computer. A top notch machine cost money. There's no escaping that, and i'm fine with that.
My frustration is a combination of multiple factors.
1) I specifically selected that machine because one of its key selling points is : rechargeabale , never need to open it. ( i've seen plenty of divers that destroyed theirs because they incorrectly installed a battery , or flooded it because they put the seal backwards. i've also seen plenty of divers that forget to change batteries or don't carry spares and mid-trip beeeep, game over. One dude once gave me 20 bucks for a cr2540 cell. i was in the middle of nowhere ( most outward island of the bahamas , only 1 flight a week there ) no such cells anywhere on the island. i always carry spares. his computer died second dive. He had a week to go and the operators would not let you dive without computer. The rental was 15$ a day ... ).
Key point : yay , no more battery swaps, no risk of flooding. Except it leaks all by itself ( my two + Dr. Lecters also leaked ... ) not good....
2) i bought the cobalt because i plonked a tank on my other one (suunto) , cracked the compass and the front lens... that machine had 1200 dives on it. The new cobalt died after a week... 31 dives. i lost 2 days of diving that time. I only do 1 trip a year but when i go, i go hard. i do 4 to 5 dives a day and ride both the saturation clock and the oxy clock. if the computer goes belly upthere is no way to recover using tables or a divewatch. wait 24 hours so your body can reset is all you can do. grumble ... brand new machine, 1 week, 31 dives .. flooded ...
3 ) i went diving last year with it. not a single glitch. happy camper. love the cobalt ! best computer in the world. Divetrip washed out because of the hurricane... ah well nothing you can do about that.
4) recall. the one i had was in the group of serial numbers affected. Oh , well see we didn't tigten a nut correctly so air can leak inside and blow the front glass off , flooding the machine... eh .. point 1 guys ?
5) preparing for the current trip i decided to do an equipment run in the local pool. I schedule the pool. That morning i figured, hey there's a software update. let's do this before i jump in. Computer freezes mid update ... grumble no 2 ... Ron quickly sent me details on how to reset the machine (which involves opening the case ... see point 1 ... and fidgeting around with little rubber ball and some sealant ( that way of protecting against overpressure isn't very well designed... it's a weak spot waiting for failure to happen.. flooding the battery cavity with a lithium ion cell in it is recipe for disaster. ) Anyway i manage to restart the computer and don't do the software update. out of time ..
6) i jump in the pool (pool at a local dive store . 15 ft deep ). computer again shows 0 ft. what ?!? grumble no 3. not again ! i contact Ron after the dive who hasme walk through a test and tells me most likely the pressure sensor is shot. computer locks out if it gets erroneous readings.
7) i contact atomic that monday, get an RMA, ship it the same monday (overnight fedex ). We're 2 weeks down the pipe now and i'm waiting...
8) i bought an oceanic wrist mounted dive computer with pressure transponder as a backup. 700$ .. unforeseen expense.
Luckily i discovered the problem. if i would have discovered this first dive of my vacation i would have really been pissed off. The plan is for 20 days of non-stop diving (minimum of 4 a day). yeah i can easily buy a new computer where i'm going. But that's not the point. I should not have to. After all Atomic is 'the 'best...
Besides, it kind of looks silly if someone walks up to me on the boat asking how i like the cobalt and then spots a second wrist mount backup.. why do you have two ? So i'd sheepishly have to answer : eh , just in case my cobalt floods . That's not very good for the image of Atomic...
Now, i do like the way the cobalt works, the way i can set it up , i like the large clear OLED (great on night dives and wreck dives ). the gas usage computation is spot on. ( if i feed it correct cylinder info its prediction is very close. ) the guts of the machine are very well built and the functionality it offers is top notch for this class of computers ( we're not dealing with tekkie machines like shearwater or v3 ). it sits in a compact form factor. it's rechargeable , light , built in compass..
if it would just keep working for a bit longer than the experiences i have had with mine ... none of them ( 3 now ) made it beyond 35 dives ... add the hassle , wasted dives opportunity , wasted money to rent a spare , wasted money to buy a backup , ship it back and forth ...
yeah.. i'm grumbly.