Freeme Posted October 22, 2015 Author Report Posted October 22, 2015 Well, mine was wired up and rocking for a few days. Then the 3rd cell would not read in escribe so I touched up the solder and all worked for another day. Now the chip will power up on battery but error message of "check battery" and I get no reading from the battery in escribe at all. Checked all solder points and everything seems legit, no visual issues I can spot. Any advice? Thinking of just desoldering (a true pain) and reattaching everything. Maybe aim the balance board down to save space if the error is due to interior clearance, which it is tight in my 3d printed case but I don't. Know. Haaelp
blueridgedog Posted October 23, 2015 Report Posted October 23, 2015 The ground solder joint looks a bit funky. How about the four resistors to the right of the USB port? Did not lift perhaps when soldering?
Freeme Posted October 23, 2015 Author Report Posted October 23, 2015 Yea that ground was a b. I'll try touching it up I guess. Would that cause my issue? Chip still powers on with just battery but says check battery when fire button pressed.
blueridgedog Posted October 23, 2015 Report Posted October 23, 2015 Do you have a multi-meter and if so, can you test the balance charger for the correct voltage? If the balance charge port on the pack is correct and the DNA200 can't see it, they you may be down to a hardware error.
Freeme Posted October 24, 2015 Author Report Posted October 24, 2015 blueridgedog said:Do you have a multi-meter and if so, can you test the balance charger for the correct voltage? If the balance charge port on the pack is correct and the DNA200 can't see it, they you may be down to a hardware error. Resoldered the battery negative to a better look, closer to board. Checked battery with multimeter and reads from ground around 3.7 then 7.6 then 11.4 and same out of each balance board pad. Device powers on battery says "check battery" and reads zero on pack and cells in escribe. So no changes. Even lessened solder amount on balance board pads. Any other variables other than chip hardware error? Evolv has been silent on my ticket. Thanks again
Freeme Posted October 24, 2015 Author Report Posted October 24, 2015 Well internet friend it works for now. Maybe the pressure in the case messed with my ground wire. We will see.
blueridgedog Posted October 24, 2015 Report Posted October 24, 2015 I am stumped. The ground is indeed the only one that could have resulted in all reading 0. It could be a short at the other end of the ground wire (on the pack).
perolave Posted December 16, 2015 Report Posted December 16, 2015 I have the same problem. I thought that the voltage on the cell nr 1 was to low as it would not charge. I bought a lipo balance charger and charged it up without any problems at all. I have soldered the same direction as the picture above.In the end it was just bad connection with the balanced pins.
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