repairing lifted pads

[Bterrier]

I am curious if it possible to repair lifted copper pads. I lifted a very small service pad which I need to connect to in order to reflash a chip.

The board is small so may be difficult to work. Any help is appreciated. Thanks

See attached photos

[stj]

Re: repairing lifted pads

probably fixeable, but your wires are far too big, that's why it ripped.

arm cpu with canbus and gimbal??
wtf is it?

[R_J]

Re: repairing lifted pads

You need to see where the trace goes, then find a component on the same line and solder a THIN wire there. Why use such large wires, they are like pry bars on those small pads.

[Bterrier]

Re: repairing lifted pads

You need to see where the trace goes, then find a component on the same line and solder a THIN wire there. Why use such large wires, they are like pry bars on those small pads.

These wires are temporary with female connectors on 1 end to connect to a ttl to USB ftdi adapter. All I need to accomplish with the pad the ripped off is to short it to the pad next to it as well as the 3.3v osd. The short causes it to boot in a different mode so I can reflash the chip.

How can I find the trace on this? I actually thought the wire were small, lol.

Is there a way to temporarily rig it up since all I need to do is short it for a few minutes? After I flash it, I shouldn't need access to the pad again hopefully.

[Bterrier]

Re: repairing lifted pads

probably fixeable, but your wires are far too big, that's why it ripped.

arm cpu with canbus and gimbal??
wtf is it?

It's a gimbal for a dji drone. Trying to fix an issue with no loive video feed. Also cant update the firmware until I reflash

[R_J]

Re: repairing lifted pads

How can I find the trace on this?

You need to look with a magnifier, the pad likely tore away from a trace, there is no way for me to see that in a picture, Then follow where the trace goes.

[stj]

Re: repairing lifted pads

so you tried to connect 3.3v to BOOT0 to get into the bootloader,
well it goes to the chip and also to a pulldown resistor.

[Bterrier]

Re: repairing lifted pads

so you tried to connect 3.3v to BOOT0 to get into the bootloader,
well it goes to the chip and also to a pulldown resistor.

Im not follwing you. Are you saying there is another point I can connect the wire to and achieve the same result?

[R_J]

Re: repairing lifted pads

from what I have found out that pad connects to one of the pins on one of the bga ic's which you may not be able to access as its under the chip.
Usually the pad connects to a trace, it does'nt go straight down into the board.

[stj]

Re: repairing lifted pads

it goes up-right to a resistor and possibly straight down into the layers.
be more concerned right now that it still works or not.