RickAdair Posted July 6, 2015 Author Report Posted July 6, 2015 I am attempting to use a Turnigy 1300mah 20c pack. When I connected the first pack the fuse blew and the monitor read 0 volts on the first cell. I thought it was a bad pack. Got a new pack(same model) and replaced the fuse. This time it didn't blow. It still shows 0 volts on cell 1. No charge happening. It will power on the pack as long as the fire button is held. Once I let it go it shuts off. On usb I get a check battery if I try to fire. Please advice. Thanks, Rick
John Posted July 6, 2015 Report Posted July 6, 2015 Use a multimeter to measure the cells with the pack not connected to the board. Disconnect the tap and the power leds. Measure the hole pack voltage, and the the voltage on each cell and report back. If it is reading below 8v, it will immediately power the board off when you disconnect USB and aren't holding the fire button down. The turnigy batteries aren't horrible if you get a good one, but the QC is pretty suspect. I've gotten packs with dead cells, packs with cells installed backwards... etcAlternatively, you could have the balancer leads shorting. An exuberant soldering job on the connector could cause this, or it might be mounted such that one of the solder tails of the balancer leads is able to short to case. Blowing fuses should be singularly rare, so there's probably a short circuit going on somewhere for it to happen. If none of that, post a high resolution image of the front and back of your board and maybe we'll be able to see some assembly error there. One way or another we'll get you going, so don't sweat it too much.
RickAdair Posted July 6, 2015 Author Report Posted July 6, 2015 John said:Use a multimeter to measure the cells with the pack not connected to the board. Disconnect the tap and the power leds. Measure the hole pack voltage, and the the voltage on each cell and report back. If it is reading below 8v, it will immediately power the board off when you disconnect USB and aren't holding the fire button down. The turnigy batteries aren't horrible if you get a good one, but the QC is pretty suspect. I've gotten packs with dead cells, packs with cells installed backwards... etcAlternatively, you could have the balancer leads shorting. An exuberant soldering job on the connector could cause this, or it might be mounted such that one of the solder tails of the balancer leads is able to short to case. Blowing fuses should be singularly rare, so there's probably a short circuit going on somewhere for it to happen. If none of that, post a high resolution image of the front and back of your board and maybe we'll be able to see some assembly error there. One way or another we'll get you going, so don't sweat it too much. Thanks. I'll get all the info together and get it posted. I'm thinking something board side. Hope I didn't knick something. I did test the pack and balance connector and everything looked good.
John Posted July 6, 2015 Report Posted July 6, 2015 Could be, but the balancers get tested explicitly during the final functional test, so to ship out they were reading properly at some point. Pictures of the board would probably clear it up.
RickAdair Posted July 7, 2015 Author Report Posted July 7, 2015 Pack is reading 11.54 All 3 cells reading 3.845 Not reading any shorts across the balance connector on board Validated continuity from b+ to the far side of the fuse See attached pics Thanks again! Rick
RickAdair Posted July 7, 2015 Author Report Posted July 7, 2015 From reviewing my own pics I think there is a component missing on the board around the balance connectors ground.
protovapor Posted July 7, 2015 Report Posted July 7, 2015 Ah yes it does seem one of the resistors(?) is missing from the array on the right. John this is one of ours, how best to handle the repair or replace?
John Posted July 7, 2015 Report Posted July 7, 2015 Yup, the resistor got knocked off. You can see the divot in the solder where it used to be. It is a 100 ohm resistor. Without it, it can't read the cell. You could send it to us and we'll put one back on. Or if you got it from protovapor and they want to set up a return, that's no trouble either.
RickAdair Posted July 7, 2015 Author Report Posted July 7, 2015 What are the next steps to get it sent in for repair? Thanks, Rick
macz Posted July 7, 2015 Report Posted July 7, 2015 RickAdair said:What are the next steps to get it sent in for repair? Thanks, RickYou have to two option either Evolv or ProtovaperVia Evolv from http://www.evolvapor.com/warranty.php (helpdesk@evolvapor.com or "Contact Us")Via Protovaper http://www.protovapor.com/support/Best that you mention this thread to either one of them.
megahtron Posted July 27, 2015 Report Posted July 27, 2015 I'm having this same issue, can't seem to catch a break after already sending in one board lol
protovapor Posted July 27, 2015 Report Posted July 27, 2015 Do you have a missing component? EDIT: Check your tap socket closely for soldering, if there are any bad solders there it will cause screwy readings.
megahtron Posted July 27, 2015 Report Posted July 27, 2015 the tap looks alittle charred lol, but it seems superficial
RickAdair Posted July 27, 2015 Author Report Posted July 27, 2015 Verify with a multimeter that there is no connectivity between the pins on the tap.
megahtron Posted July 27, 2015 Report Posted July 27, 2015 everything checks out, had a friend check it over (im still very much a noob, i've built unregulated series boxes and stuff of that nature but this is something extremely new)
megahtron Posted July 27, 2015 Report Posted July 27, 2015 screen will not come on unless usb is connected, im sure its because of how low the pack is reading and when i try to fire it it says check battery which is probably from the same cause.
VapingBad Posted July 27, 2015 Report Posted July 27, 2015 megahtron said:screen will not come on unless usb is connected, im sure its because of how low the pack is reading and when i try to fire it it says check battery which is probably from the same cause.Sounds like you blew the fuse, it is white now?
protovapor Posted July 27, 2015 Report Posted July 27, 2015 meter the battery pack while it is disconnected from the board. check what voltages you are getting at the various pins on the tap
megahtron Posted July 27, 2015 Report Posted July 27, 2015 the fuse is still green, I'll have to meter the pack again when i get home but when I checked it originally it was ok
megahtron Posted July 28, 2015 Report Posted July 28, 2015 Ok it's definitely the fuse, is there a way to have it replaced by sending it in? Not sure I could manage that job lol
Bapgood Posted July 29, 2015 Report Posted July 29, 2015 Megahtron - To have the fuse replaced I would recommend contacting Evolv here or send John a PM and reference this thread.
Yurlosin Posted August 1, 2015 Report Posted August 1, 2015 pretty sure there is something going on here I have 3 of the 5 boards I have that are not reading one of the cells it sucks as there is a lot of money invested
John Posted August 1, 2015 Report Posted August 1, 2015 What are the production dates for the ones not reading a cell? Can we get a picture of the front and back of the boards in question near the tap and USB.
Yurlosin Posted August 1, 2015 Report Posted August 1, 2015 You have pics of the first one you said it was missing components I will get pics of the other 2 and production dates when I get home
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