VapingBad

Try bridging the fuse with a pair of tweezers to see if that fixes it.

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Absolutely out of 1 DNA 250, 7 DNA 200, 2 DNA 75, 4 DNA 40 & 2 DNA 30 only had the screen glitch on the 40s which doesn't bother me and the screen ribbon cable caught under the fire button on a couple of 200 (screens replaced by Evolv under warranty), I had a couple of board failures in the beta program that were things that were never available retail. All the mods were ones I made or from Evolv except for one Wismec Reuleaux.

That is very high, all mine are 0.003 - 0.004.

Does the button show as pressed at the bottom of Device Monitor?

I would try a spacing shim between the button and actuator to see if it is a fitment issue.

If it uses the onboard button it could be the board mount screws were loose so the the board is a little further away from the button actuator. You can also lift the top of the button off and clean the inside ans the disk, sometimes this revives a problem button, this is a DNA 40 button, but the 250 one comes apart the same way.

This does sound like a connections issue, IIRC the outer of the 510 on the nano unscrews, take it out, clean both side of the threads and replace it securely, you get the same issues with threads on mech tube mods. Also some of the VT75 have a ground screw or two on the base, again check these are secure.

It depends on the batteries and the low cut off setting, basically the board is seeing at least one of the cells hitting the low cut off under load. If your batteries are about 3.4 V (guess for 40%) the board would be drawing 15 A and the sag you are seeing is resting battery V - low cut off V. So if you have a high value for low cut off like 3.09 V 0.21 V sag sounds reasonable, try setting it to something more reasonable for 18650s like 2.8 V. Dirty or weak battery connections can also cause excessive sag. Low cut off is for the battery voltage under load (while firing) and not the resting voltage.

Have you locked the resistance, because I see the live res line dips below the cold res.

If both wires are Ti just use the onboard Ti profile, you only need SE for metals not already loaded on your device or coils made from more than one type of metal.

Yes, in parallel.

It depends on the power level, but with a 75 I get away with 4 parallel loops of 0.5 mm about the radius of a tennis ball, they don't get too hot the heat sinking back into the case is more an issue and I use an old computer fan that keeps the case & battery cool but it is not essential. This is what I used to do custom battery test, I just use a single 3" fan now.

Link in my footer.

No it will be fine, just connect to EScribe and run USB Recovery charging, it will either stop or carry on charging as normal, if it stops check your mod is not too hot and start it again, you may have to do it a few times. Sorry I don't know the timing as I have not had to do this myself.

Yeah just like the cells in a Lipo 3S pack. I have not seen it before, sorry.

You may need to do it several times as it has a time limit for safety.

It looks like the new battery is too low to accept a normal charge @ 1.6 V (cell) and you need to do USB recovery charge to bring it above 2.5 V to charge normally. Tools - Diagnostics - Perform USB Recovery Charging...

Looks like the mod resistance is set far too high, around 0.6 when 0.006 is more usual, you would need to set Options - User Interface to Advanced, go to the Mod tab and change the mod Resistance to 0 or 0.006.

That shouldn't be a problem, have a look in EScribe - Device Monitor to see if the cell voltages are sagging to 3 V while firing.

If there is no ground wire from the board to the 510 it could also be the board mount screws are not tight enough.

K power limit = 167 Capacity = 19 Wh (if the 29 was for 3 batteries) Doesn't explain your issue though, what metal and resistance coil are you running?

It could do, you need to be less than or equal to 0.5 ohm for the full 75 W because of the 6.2 V max output voltage.

The Evolv SS316 one, the wire I am using is SS316L from StealthVape, but it also worked well with a couple of samples I got elsewhere inc some 317L.