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Conanthewarrior

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Reply with quote  #1 
Hi everyone. I hope you are OK. 

I am quite annoyed today, as my Wismec DNA200 is displaying 'warranty service', and the screen is fading in and out, as if it is struggling to be powered. 

I have a large collection of mods (40+), and out of them all, the DNA200 has had the highest failure rate for me. This will be my third DNA200 to fail, I have four, and one DNA75 in my collection. 

What can I do here? I bought the DNA200 devices on the basis of a good quality board, that will last me a long time. I can't fault Evolvs support, as they did replace the board in two of my other DNA200's that also failed. 

The thing is, I have many cheaper mods that are older, and still function well. I just like being able to use Escribe to set the mod up how I like, but is this a pretty normal failure rate, or have I just been extremely unlucky? 

Any help would be great, as I live in the UK, and as the mod is already displaying warranty service anything I can do myself will be a good idea, as shipping to the USA takes a fair time there and back and costs a fair bit too. 

Thank you all for your help, Conan. 
Conanthewarrior

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Reply with quote  #2 
Ok, I have connected to device monitor and the battery voltage is all over the place. 

One is reading at around 3.81V, the second at 3.11, and the third at 1.98V. 

Putting them onto my charger shows them all to be the same voltage level.

Getting very upset with these devices now, if anyone in the UK wants a DNA200 message me and I will give it to you if yet again one needs repair. 
retird

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Reply with quote  #3 
You might start a ticket with Evolv.....they can guide you....Evolv has one year warranty on just the board....

Question:   How old is that device as I thought Wismec stopped making that device long ago? 

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Conanthewarrior

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Reply with quote  #4 
I am pretty sure it is more than a year old easily, but has not had much use at all- probably at most 2-3 days a month in that time due to my other devices and rotation. I was surprised when I checked last how many puffs they had each used- between 2000-8000 puffs. This was a while ago though so could well be double that now for each DNA200. 

I have tried a hard reboot in escribe, still the same issue, and I have tried 2 other sets of married, triple 18650's. 

It is just annoying they are some of my most expensive mods, and I have had a 75% failure rate now, while cheaper mods still are going strong that are 2+ years old (They are only simple mods, but they at least work). 

If anyone has a fix for this, it would be a big help. 


Conanthewarrior

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Reply with quote  #5 
I have opened a ticket, I hope I can get some joy, even if it is guidance on how to fix the issue at my end. I will say Evolv's customer service is great as I already have, I must be extremely unlucky though, or is this type of failure rate normal? 
If so, I can't recommend Evolv boards, but I hope I am unlucky as when they do work they work fantastically. 
retird

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Reply with quote  #6 
To try to answer your questions:  

I feel your pain.... really..... but I think your failure rate is not normal .... I asked a long time ago about DNA board failure rates for the DNA200's and it was super low compared to average failure rates of massed produced items.... as of 1/11/2016 the failure rate was very low for board specific issues. At that time they had over 200,000 boards in the field. Would you say that a 2% failure rate is reasonable? The failure rate was lower than that as the rate does not count failed batteries or problems caused by the build of the mod. 

My experience:

I have been vaping only devices with Evolv products in them since 2010 (except one which I bought just to test and then sold).  My first device was the Darwin which was made by Evolv in 2010. This device today is still like new and works as good. I have purchased, or made, devices with all of Evolv's products over all these years and had only one failure.  That failure was do to a mistake I made while building a DNA 20.  Evolv replaced that board even though it was my fault.  All of my DNA 20, 30, 40, 25, Kick, Kick2 devices worked until I gave them all away (except I kept 2) when the DNA200 came out.

At the present time I only have the Darwin, a DNA40, 2 DNA200's, and 3 DNA75's and no issues with any of them.... so my experience ranges from devices that are a few months old to a device that is over 6 years old.

Sorry for the long-winded post....hopefully I answered your question...

If you would be so kind to let us know what the outcome is.... may be helpful to others..... THX and I wish you well...

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Conanthewarrior

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Reply with quote  #7 
It does seem my failure rate is above average- but unfortunately it has still happened. 

I will update with the outcome of my ticket I have raised, out of every manufacturer of mods I own though these have failed the most [frown].

Surely it is not every manufacturer I have bought from that is the issue, as I would expect issues with my other regulated mods (They are my babies- I do enjoy collecting them). 
retird

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Reply with quote  #8 
Understand and early on Wismec and Hotcig had to work out a few build issues, as did a few other manufacturers....... it ain't no fun to have a mod that has issues... my hope is that those that read your 75% failure rate don't see it as normal and start saying that Evolv has a 75% failure rate... we all know how social media is....  [smile] 
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Conanthewarrior

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Reply with quote  #9 
Oh I don't want that either- I just am annoyed I have been so unlucky myself lol. I love my DNA200's and my 75, as I am a little geeky and love using Escribe to tweak my vape how I like. 

I actually set each profile now with a different preheat and punch, and change the material on the mod as it seems the best way for me to set up my Evolv mods. 

I bought them as long lasting, higher end devices to use alongside my cheaper mods, but have had more trouble with them than the easily replaceable ones [frown]
retird

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Reply with quote  #10 
I set my profiles a bit different and that's the beauty of the DNA and EScribe..do whatever works for you...  I like "fiddle free vaping" and "geeky"....

I almost always vape one type material (ss316L) and it is a pre-made "Notch" coil (Wismec). ... and set the profile with temp (Temp Dominant), wattage, sufficient preheat, punch, duration and material type and create the screen name.

Occasionally I will vape 2 other pre-made coils of different materials (Aspire Kanthal or Ni200) thus 2 additional profiles... (one Wattage dominant the other Temp Dominant).

I only use one type of atty's for the "Notch coil" and one type atty's for the Aspire coils thus always consistent and "fiddle fee"...clean the atty and pop in new coil and add e-liquid.

I also only use one e-liquid brand thus consistent Vg-Pg, again I like "fiddle free"...

Thus I select a profile for the material/coil used and just adjust temp (or wattage) depending on the profile used and only when needed to be different than the default temp or wattage setting.... all my stuff vapes below 40 watts and/or 440F.




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I am not an employee of and do not represent Evolv Inc.  My opinions are just that and are not meant to be fact or even correct.

Conanthewarrior

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Reply with quote  #11 
I must say, I am VERY happy today [smile]

I received a reply to my ticket, and there was an explanation there is a known issue with the Wismec DNA200's, and a bad connection with the batteries. 

I was advised to remove the door, and batteries, and press down hard on the side of the mod on a hard surface. After doing this, I replaced the batteries- they was MUCH harder to get in. 
At first, I did not think it had worked, but once I got the door back on, which was a bit of a struggle as I must of pressed a bit too firmly, success!

It now works again perfectly, and I am so happy. I didn't have to send my mod to the USA, and it is working again how it should. Thank you Evolv for helping me out, I did not know of this issue with these devices. 

So, a happy ending to this problem [smile]
Conanthewarrior

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Reply with quote  #12 
Hi everyone, I now know as I posted the issue is due to the connection with the batteries, and I thought I had solved the problem completely, but today I used a different RDA with a build that needs a bit more power than I usually vape at, and even though the batteries are showing as full, the power is reducing and the battery indicator flashes. 

I am trying to fire at 80W, but the power is dropping to around 60-64W. Temperature control is off, so I just wondered if anyone had any tips on getting the connection as solid as possible again? 

Thank you all for your help, Conan. 
retird

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Reply with quote  #13 
Your issue seems to be directly related to the design of the device.  You should contact Wismec for a solution.  
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I am not an employee of and do not represent Evolv Inc.  My opinions are just that and are not meant to be fact or even correct.

Conanthewarrior

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Reply with quote  #14 
It does indeed. I will contact them, but I don't expect much from them from what I have heard [frown]

I adjusted the ground screw today, and after about 30 minutes of fiddling, got it to work. Then when I put the door on, the problems started again. It seems the door stretches the contact points, and leads to poor conductivity. 

I am not sure wether to sand off the rings that act as reverse polarity protection- I have a DNA200 I converted to use dual 18650's, and have been fine using that with no reverse polarity protection, I just make sure to triple check before I put the batteries in they are the right way round. 
retird

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Reply with quote  #15 
Good thoughts..... how about just sanding down the door a bit?   just a thought.....
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I am not an employee of and do not represent Evolv Inc.  My opinions are just that and are not meant to be fact or even correct.

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