Ghostrider Posted January 20, 2016 Author Report Posted January 20, 2016 I have a lavabox and i have just replaced the battery as the original one dropped to .67v on cell 3 and would not charge. I now have a problem with the battery i fitted today. When i first installed it and connected it to escribe it was reading cell 1 4.03 cell 2 4.04 and cell 3 was all over the place between 2.8 and 3.3. I left it connected for a while whilst monitoring it and it ended up reading cell 1 4.19 cell 2 4.20 and cell 3 3.35. I took the battery back out and checked it with a meter on the balance pins and i got 4.2 8.4 and 12.6. I then took the board out to look for any obvious problems and i didn't find any but while it was out i desoldered and removed the balance port and then reslodered it back in. All the little resistors at the sides of the usb seem present and correct. Anyone have an idea what the problem could be?
Spector NS5 RD Posted January 20, 2016 Report Posted January 20, 2016 Ghostrider said:I have a lavabox and i have just replaced the battery as the original one dropped to .67v on cell 3 and would not charge. I now have a problem with the battery i fitted today. When i first installed it and connected it to escribe it was reading cell 1 4.03 cell 2 4.04 and cell 3 was all over the place between 2.8 and 3.3. I left it connected for a while whilst monitoring it and it ended up reading cell 1 4.19 cell 2 4.20 and cell 3 3.35. I took the battery back out and checked it with a meter on the balance pins and i got 4.2 8.4 and 12.6. I then took the board out to look for any obvious problems and i didn't find any but while it was out i desoldered and removed the balance port and then reslodered it back in. All the little resistors at the sides of the usb seem present and correct. Anyone have an idea what the problem could be?pack seems good. have you tried a hard reboot. reinstall your firmware? do you know where to look for knocked off resistors or other components? it can be very hard to see and catch everything since they're so small. let me see if i can find the pic with the resistor knocked off the board.....
Ghostrider Posted January 20, 2016 Author Report Posted January 20, 2016 I have tried both soft and hard reboot and i also tried downgrading firmware and then letting escribe auto update it back to the latest. Here are some pics i took of the bottom half of the board when i had it out. I read about the resistor problems while searching the site for clues and these all look correct to me.
VapingBad Posted January 20, 2016 Report Posted January 20, 2016 It would be worth checking the pins & sockets on the balance plug are clean.
Ghostrider Posted January 20, 2016 Author Report Posted January 20, 2016 I took readings from the solder side of the pins with the battery connected to rule that out after i had resoldered it to the board.Here is a screen shot of device monitor after letting it run for 2 minutes monitoring cell 3 and pack voltage.
Spector NS5 RD Posted January 20, 2016 Report Posted January 20, 2016 Ghostrider said:I have tried both soft and hard reboot and i also tried downgrading firmware and then letting escribe auto update it back to the latest. Here are some pics i took of the bottom half of the board when i had it out. I read about the resistor problems while searching the site for clues and these all look correct to me.from what i can see nothing looks misplaced to me. i would rma the board back to evolv. not unless someone else comes up with any ideas. if a cell's voltage is fluctuating, sounds like a bad connection somewhere (intermittent connection).
Spector NS5 RD Posted January 20, 2016 Report Posted January 20, 2016 i was gonna say solder the balance leads from your old lava battery directly to the board. and see if that corrects the problem
Ghostrider Posted January 20, 2016 Author Report Posted January 20, 2016 Sending it back to the states is a last resort if i can't sort it myself. As for soldering the old battery direct unfortunately i can't do that as it had a slight bulge so i decided to bin it to stop myself from messing with it. Plus like i said in a previous post the battery voltages are correct on the reverse of the balanced plug.
Spector NS5 RD Posted January 20, 2016 Report Posted January 20, 2016 well it's looking more and more like an rma situation. sorry to say it, but you're confirming correct voltages at the taps and mains on the board, it sounds like something that cannot be fixed by you. if it were me, i would see how the boards with a pack directly soldered to the board, taps and mains. i'm out of ideas.
Ghostrider Posted January 20, 2016 Author Report Posted January 20, 2016 ChunkyButt200 said:well it's looking more and more like an rma situation. sorry to say it, but you're confirming correct voltages at the taps and mains on the board, it sounds like something that cannot be fixed by you. if it were me, i would see how the boards with a pack directly soldered to the board, taps and mains. i'm out of ideas.Thanks for your time and trying. Maybe someone from evolv will see this thread and have an idea what's wrong.
Guest Posted January 20, 2016 Report Posted January 20, 2016 Do you solder the mains to the board? Or a connector to it
Ghostrider Posted January 20, 2016 Author Report Posted January 20, 2016 Laguz75 said:Do you solder the mains to the board? Or a connector to it I am using the original connector and that is showing 12.6v at the board.
Guest Posted January 20, 2016 Report Posted January 20, 2016 Well yeah but when amps are applied it's going to drop, I think it's a connection problem, same thing happened to me with my 18650 setup I just flooded solder back on to it and it work and I thought I did a good job the first time, try that and if it doesn't work take a pic of the main solder joints
black lace Posted January 20, 2016 Report Posted January 20, 2016 Does it not fire and work, ? Thought cell cut off point is 3:07 volt if it does work, have you not tried using the battery power up and recharging a few times to decharge recharge, getting it doing somthing can ballence and healthy it up your soldering is neat and precise but needs to be sniped down where the leads stick through the board to tidy it up perfect.
Ghostrider Posted January 20, 2016 Author Report Posted January 20, 2016 Laguz75 said:Well yeah but when amps are applied it's going to drop, I think it's a connection problem, same thing happened to me with my 18650 setup I just flooded solder back on to it and it work and I thought I did a good job the first time, try that and if it doesn't work take a pic of the main solder joints Its showing 12.6 at the board but escribe is showing 11.75 in device monitor. Likewise all 3 cells are showing 4.2 at the board on the back of the balance connector but device monitor is showing 4.2 4.2 3.25.
Ghostrider Posted January 20, 2016 Author Report Posted January 20, 2016 black lace said:Does it not fire and work, ? Thought cell cut off point is 3:07 volt if it does work, have you not tried using the battery power up and recharging a few times to decharge recharge, getting it doing somthing can ballence and healthy it up your soldering is neat and precise but needs to be sniped down where the leads stick through the board to tidy it up perfect.It will fire and work but will show imbalanced battery all the time and it will report as out of charge because of cell 3 voltage being misreported.
Guest Posted January 20, 2016 Report Posted January 20, 2016 Ghostrider said:[QUOTE=Laguz75]Well yeah but when amps are applied it's going to drop, I think it's a connection problem, same thing happened to me with my 18650 setup I just flooded solder back on to it and it work and I thought I did a good job the first time, try that and if it doesn't work take a pic of the main solder joints Its showing 12.6 at the board but escribe is showing 11.75 in device monitor. Likewise all 3 cells are showing 4.2 at the board on the back of the balance connector but device monitor is showing 4.2 4.2 3.25.[/QUOTE]flood the mains with sold and if it doesn't work take a picture
Ghostrider Posted January 20, 2016 Author Report Posted January 20, 2016 Laguz75 said:Flood the mains with sold and if it doesn't work take a pictureThey look fine to me but i will fire the iron back up and take them off and clean them and then resolder them and take a pic.
black lace Posted January 20, 2016 Report Posted January 20, 2016 [/QUOTE]It will fire and work but will show imbalanced battery all the time and it will report as out of charge because of cell 3 voltage being misreported.[/QUOTE]ok got yah, sorry to ask and sound like a dork but what is it that your calling as "at the board" in relation to escribe?an what is the battery?also I suggest that because your soldering is sound I would solder in wires say 30mm long as leads to a jst connector as an extension, it will tuck in between the 200 board and mod beneath your usb, then also if you decide to direct wire and throw the connectors out altogether, you can join to the leads, if that makes sence
Ghostrider Posted January 20, 2016 Author Report Posted January 20, 2016 black lace said:ok got yah, sorry to ask and sound like a dork but what is it that your calling as "at the board" in relation to escribe?an what is the battery?also I suggest that because your soldering is sound I would solder in wires say 30mm long as leads to a jst connector as an extension, it will tuck in between the 200 board and mod beneath your buttons, then also if you decide to direct wire and throw the connectors out altogether, you can join to the leads, if that makes sence I am calling at the board as taking the measurements from there rather than at the battery itself IE taking the balance readings from the other side of the connector where the pins come through the board and in the case of main power then from the board where the wires are soldered. It just means i am ruling out any connector or wiring problems. It is beginning to look more and more like a rma problem.
Ghostrider Posted January 20, 2016 Author Report Posted January 20, 2016 I have removed, cleaned and resoldered the main wires and the problem is still there. I can't get a decent picture at the moment because of lighting the flash whites it out and its too dim without the flash.
black lace Posted January 20, 2016 Report Posted January 20, 2016 oh ok, with a multi tester, ,, ive just googled lavabox they look very nice, they came out less than six months ago, I would recommend to you, take it up with the person you bought it off, I thought you had built it yourself, I would insist that you need a replacement because still only months old and statutory rights ect, even if you rma it you have to send the receipt in with it, and like you said last resort to send to USA, tell the vendor that's for him to do, hopefully youl be back on the road quicker ,,,so to speak,, all the best..
Guest Posted January 20, 2016 Report Posted January 20, 2016 I was thinking it was the main negative wire cuz I did a 2 wire setup on my 18650 and the last battery did the same thing that's when I new it was a bad connection
Ghostrider Posted January 20, 2016 Author Report Posted January 20, 2016 I didn't buy it a friend did and i am trying to sort it for him. I may have found the problem, when i look at the picture of the board on the ordering page it shows a square chip just above the usb port with 6 pins on each side. When i look at this board i can see that only 4 pins are soldered on the bottom right hand side and the 2 middle pins are tucked under the chip. If that is the case then it must have been a manufacturing fault and my dozy friend never bothered with escribe or checking his battery stats.
Guest Posted January 20, 2016 Report Posted January 20, 2016 I'm getting off work I'll tell you what I did in an hour
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