[DNA200 suddenly became a dud.]

You have some really good eyes to see that one. That's why you're the genius. What does that little component do?

[DNA200 suddenly became a dud.]

John said:

No battery display means there is something wrong with the taps, resistors or the battery management ic. 

Similarly, it sees a battery error so it will shut down. Can we get an image of the board? 

Do you need a close up of anything specific?

[DNA200 suddenly became a dud.]

What are you looking for in the photos?

[DNA200 suddenly became a dud.]

This was working fine until it suddenly went dead. I tried to connect to connect to escribe, nothing. Tried to force a firmware, nothing. Then I desoldered the battery and let the chip set for a while without power. Then I soldered the battery again and this is the weird part. The dna 200 will turn on and completely shut off after 5 seconds. The battery symbol isn't on the screen at all. All of the battery and balancing connections are solid. The pc still won't detect it. The weird part is that if I connect it to my high powered port, it will get very hot and smell like it's burning. The battery is still fine and my reader reads the correct voltage. If I hold the fire button, it will say check atomizer over and over again without turning off. If i press the power button once, it will turn off in 5 seconds. If I turn up the wattage, it will turn off and start back at 15 watts when turned back on. Plugging the usb in will light the screen up. Plugging it in without a battery will do nothing. This would be from one of the first batches and is obtained from the coop on ECF. Thanks

[adding a "function" button?]

I was thinking of placing diodes to keep the two circuits isolated but both activated with the button press. But, if it's not needed then i don't want to hassle with diodes.

[adding a "function" button?]

Hello. I want to add a button that functions as pressing the + and - at the same time. If I wire a button in parallel to both of the + and - post holes in the board, will it work or fry ish up?

[Come Work at Evolv]

Got to love the support for American products with American jobs. On top of that, great American pay. Kudos to Evolv.