Had a similar problem with the board from Phantom, opted for a replacement from Sean at Pin Palace.
Easy fix and no more problems.
Easy fix and no more problems.
CN6 I already reflowed all pins
What's next before I give up and post it to the Legend?
Don't give up, you must be close nowCN6 I already reflowed all pins
What's next before I give up and post it to the Legend?
done that, then went one further and removed the CN6 header pins so i could see what went where. i still couldn't establish connectivity between CN6 pin 3 and 6 and the +12V test point though.as a reminder, here's that schematic -It's possible that reflowing didn't take so I'd do them again.
not sure what i was looking for, but there is connectivity between all the points i marked with a blue diamond on the front, and all the points marked with a blue diamond on the back.If that still doesn't solve it, take C4 off the board and check the track underneath it. If the track under C4 is damaged then you'll need a replacement cap for C4.
yep, they're connected - blue diamonds on back of board.With C4 removed check continuity from DB1 to the top side of C4.
but then i found that there wasn't continuity between the yellow circle on the back and on the front (same point) so all blue diamonds on front and back are NOT connected. yay, a smoking gun! i think i'm getting close - presumably when i removed the 4500uF cap that was there, i killed the through-hole trace. so i fixed it by soldering part of a 0.100 header pin from my spares boxCheck continuity from the top side of C4 to CN6.