John

How long ago did you get the board and from where? Do you know what the manufacture date was? And what firmware. It never woke up after being off, correct? There was an old bug that could do this, but it should have been corrected with the 7/9 firmware. I would hate to have it back, especially if it was a new production board with new firmware.

Yes, this is an excellent thread. If you could also post symptom ms, firmware, how long it went before the symptoms showed up and (if you can) the original programming date. That would be most helpful.

Correct. Fully discharging and full charging is worse for lithium batteries than keeping them more charged. Vaping while charging is better for the battery than running it all the way down.

Ah. Your regulator is running out of spec. Send it in and we will figure out why. Pm me your address and we will get a board cross shipped.

Autofiring is usually a soft short between the out pad and the via to the right of it on board edge.

Well, there are about 70 reference devices floating around out there for up to three months, so it isn't as big a sample as the thousand or so opuses and hanas in customer hands. I will say that we never had a reference device blow a fuse, in 100 person months of total use, so that problem has me a little flummoxed.

Did you unplug and replug the taps after you replaced the fuse? If not, try that. You have a battery meter, so the processor is talking to the analog front end after a fashion, and your screen doesn't show "warranty service" so the calibration isn't that off. The analog front end powers directly from the taps, so if those never got disconnected it may still be trying to talk to the processor from before whatever happened happened. Hence unplugging and replugging the taps. This is an odd one.

But also, as a matter of some perspective, do keep in mind that there are thousands of these in the field being used daily. Not the hundreds of thousands we will get to when everything is 100% finished and the floodgates open, but still a significant number.

Well, it is part of the charge circuitry. It ia 99% knowing where to look first based on the symptons. It looks a bit discolored, but I don't see any burning on it. Will see when we get it back. Is there anything unusual about the charger you typically use with this guy? We hadnt seen a lot of charger relates issues yet.

Thanks. Okay, so it isn't a new bug in the new firmwares like 7/28. Which isn't to say that it isn't a bug, certainly. Oh, also, if you get it talking to escribe, can you post what the production date was? From the my DNA button on the general tab.

Actually, if it will read the cell voltages in Escribe but won't fire, and only turns on with USB, that sounds exactly like the fuse. We have been seeing some pop fuses that don't burn through the green covering. If you haven't yet, send that one back to us to diagnose and repair. No reason to call it a loss.

What is it reading in device monitor for cells? Actually, if it is talking to device monitor, can you take a complete shot of device monitor? It should talk to usb regardless of the fuse status. After that, if it is talking to escribe, go to tools and command a hard reset and see if the battery starts cooperating again. What you are describing sounds more like the firmware crashed (which if it does it at just the wrong time can absolutely pop fuses or damage the board, the 200 is very timing sensitive) so what firmware version were you running?

We're doing our best! The infant mortality on these is higher than I would like, but it seems to be device to device specific (the opuses that have problems tend to be blown fuses, the hanas have been mostly screens so far), so hopefully a lot of the early issues are implementation details and get tidied up soon. As we find repeatable production or firmware related issues we continue to tweak the manufacturing and testing here at Evolv, and I know the manufacturers are doing the same. You could run it off a car or motorcycle battery. ivcan elaborate on how to set that up if you are serious. Straight from a cigarette lighter the voltage could get up a little high (14.5V) and your typical cigarette lighter outlet is fused to 10 amps, so you would have to limit the power and preheat to 120 watts or so.

Iandvaypes, can you get a closeup of the three legged component near the screen connector? That is the only thing that looks even a little wrong on yours. Pm me your address and I will cross ship you one Monday. You have a failure mode we haven't seen before exactly, so I would like to know what exactly it is doing. Thanks.

Brigrz81, just totally nonresponsive? Not the popped fuse symptoms ( only turns on with USB connected) and not the screen issue ( board fires, screen isn't communicating) but dead is dead no response?

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?

Thanks. Can you also post (or pm) a picture of the inside of the mod these are going into? You know, the old once is happenstance, twice is coincidence, three times is enemy action.

Do you remember if it stopped mid-puff or if it just didn't wake up from being left alone?

Yeah that isn't any trouble I will have replacments out to you Monday, but I would like to get to the bottom of why you are having such unusually high numbers of issues. Are these being shipped to you in the retail black boxes?

On the second one, is the tallest black component next to the screen connector... Cracked?

If you have a multimeter see if the tap connector on the battery was installed backwards when they built the pack. That would cause problems for sure.

Yeah the production date would be great, so we can see who was on the depaneling machine that day. That is my theory where that damage is coming from, they had to have the resistors when they got tested or they would have failed test and been sorted out.

If you install an old escribe, like 7/1, does it do the same for you, or is it related to the new antialiased graph code? I am sure this is something simple, like a dll that doesn't include by default on vista. We will find it next week.

Ha... Yeah... It is the same software. I didn't figure there was much overlap between my two companys' user bases. What do you use the 2x32 for?

Yeah if it got unplugged halfway through, you should be okay, just do the manual update from Tools... Update firmware... Should be okay.