From
Vapor Shark's repair diagnostic page"
*We do not replace nor repair DNA30D boards.
Don't know if it's true but someone posted on the Vapor Shark thread that a standard DNA board would need to be cut down to fit in the device. Sounds likely. If true, that would pretty much rule out DIY repair for most people.
The Vapor Shark has no reverse battery protection so one oopsie and the chip is toast which leaves one with a $190 paperweight.
I have the dna30 vaporshark the good - fantastic form factor!!!! It and my provari mini are on me 100 percent of the time. Stand by the fact that provari is simply the BEST mod out there for Durability and reliability... I know they are expensive but they are more than worth it, and compared to other mods out there they run fairly competitively priced, Especially with vapor shark. I get 8-10 hours vape time on an 18490 and 3-4 on an 18359, so no need for an extension with the standard size provari.
The bad-1100 mah lipo battery that is not removable. When the battery drops taking a charge it has to go to vaporshark and they swap it out. Granted IRS only 25 bucks but I'm not a fan of that.
The RDNA does have a replaceable 18650, however. And the DNA board does not do reverse battery protection which is why I went with the lipo model. I've already woken up and half hazardly slapped a battery in a mech the wrong way so I liked the idiot proof thing.
the downside of the DNA chips are not just the lack of reverse battery and short circuit protection but they also don't have strong down. Meaning if the battery has a 4.1v charge and you set it at 3.5 too bad, until the battery gets down to 3.5.
the sx chip however does have reverse Battery protection as well as step down. It also has upgradeable firmware.
The downside on those is that it's a little difficult to tract down a well made durable sx mod. Imho.
Best I've seen so far would be by tatroe.
https://www.cigtechs.com/mobile/Personal-Vaporizers_c_32.html#homeSubCat_32_1