dwcraig1
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Posts posted by dwcraig1
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I'm not sure if I understand your post but here is something to consider. The DNA 250 and DNA250 are buck boards. When these boards operate on two cells the maximum voltage output is lower than what the data sheet states for these boards. For the DNA250 board the maximum votage output is 6.2 volts and the DNA250C is only slightly higher when operated with two cells. What ever the voltage drop of the cells is the output voltage can never be higher.
I putyour .6 ohm coil @ .7 ohm hot @ 55 watts into an Ohm's Law calculator and got 6.2 volts, you are probably hitting the cap. Try building your coil a little lower, say .35 ohm and see if it makes a difference.
If you are not achieving the set temp setting then you for the most part vaping wattage.
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They are using a chassis ground for the 510 so there are only 3 solder joints.
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1 minute ago, leea12345 said:
i can do the soldering , just can not seem to see how to get to the board
Look at this thread, scroll down a bit.
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You might try a cell phone repair guy, someone skilled at soldering. I have one, it doesn't look that hard. About a month or so ago I post some pictures showing how to get to the board.
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While they are in the US you might try Evolv.
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First thing to do is to try another cable. Make sure the cable is for data as well as for power. Check the cable with another device, perhaps a phone.
If the USB port is USB 3.0 there may be one that is USB 2.0, try that. There have been reports of some USB 3.0 controllers not working with DNA boards.
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They have a very good charger that balances the individual cells, I charge mine internally. Your choice though.
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Will it load an Ecig file? In EScribe with mod connected go to file/open, select the ecig file I have uploaded, upload to devise.
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While I don't know just how liquid got inside of the screen I consider this to be the way, liquid was present along the edge of the screen. The screen was warm, as the screen cooled the liquid was drawn inside.
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Having the correct battery curve or not has nothing to do with operation on the device. The proper CSV file only serves to make your battery gauge accurate.
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Here is a picture that looks about the same, in this case is was e liquid inside the screen.
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Are you using a SS316/316L Temp profile with replay? If so try the wattage profile.
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There are many themes available for download on this site authored by some pretty sharp folks,
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You might try locking the ohms. It only locks the cold ohms. I doubt that I have ever done it myself, it will maybe let it work properly for now. Well almost properly, I consider locking the ohms kind of a work around and not solving the actual problem. You should be able to do that without a computer depending on the theme.
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Most likely there is some resistance change going on that shouldn't be. Could be loose post screws in atty, bad connection between the 510's .
You said dry hits, would burnt hits be a better description? It's hitting much harder right?
Take note as to whether you cold ohms is changing, Of coarse coil must have cooled to compare.
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Using Device Monitor in EScribe will show quite a bit of information. Check the boxes for cold ohms, live ohms and power and post some screen shots of this happening. The Snippet Tool in Windows works well for capture. An example here, not replay but still good example.
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Did you buy it directly from the Philippines? VA only services the ones they sell. If bought from a vape shop you have to go through them. You need to pursue Evolv, it's the best way.
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I asked before if you tried another battery, I figure that you did but if not try that.
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I was really hoping that was going to fix it. No I don't see anything. Try to get back with Evolv, I would expect they will let you send the mod in for board replacement or repair. If they do they will pay return shipping. They generally get the work out the same day it arrives.
Refer to these posts.
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Well it's nice to have the cover but if you break the cover it won't matter much. Just make sure that you only have a hold of the cover.
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Well then the only thing I can say is that end of the cover needs to come out first. The cover is not glued, well at least not on mine, it is just pressed in tightly.
I was able to get my finger nail into the center and ran the edge of a credit card down to the bottom but the card wasn't strong enough to pry it out.
Care must be taken to not hit the components on the board as they could get knocked off.
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So if you open yours I'll bet tightening the board screws will fix it for you.
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I have always wanted to see how VA wired it. I tried to remove the cover over the board but gave up. The cover is just press fitted in the case. I fashioned a tool from an o-ring pick and got the hooked end inside the little opening and pulled, the cover came right out.
Note the black wire, it goes from B- to a spot on the case right under the board. How they attached it I'm not sure, that's copper to aluminum so maybe they glued it.(?)
The 3 screws holding the board into the case are able to provide the necessary ground for both the board and 510 socket.
All 3 screws on mine were a little on the loose side.
I would guess that your problem is with the ground and not the positive.
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So I hooked up my DNA75 VA Spade to Escribe and started loosening the battery cap, here is the result in Device Monitor.
This is what a bad connection between board and battery looks like. In this case the bad connection was between the battery and battery cap. But there are other places that could be problematic. Very possibly the 3 screws that hold the board to the case provide the ground for both the board and 510. Or a bad solder joint on the positive lead or contact.
As I said I couldn't figure how to take mine apart, I wanted to see how they did the B- on the board. They could have used a wire to a stud in the case, I don't know.
DNA250c Balance port info needed please
in Batteries and Charging
Posted
A great question. Device monitor shows no increase charge rate between the bridged cells and appear to balance charge just fine. Note I am just a moderator and not an Evolv tech but pretty familiar with using the product.
So if you bridge it for 2 cells you shouldn't be using 3 cells... for example.