Repairing my soldering mistake

I recently bought a Simultaneous RFID Reader with external antenna hardware. I was following the directions here tutorials/simultaneous-rfid-tag-reader- … troduction, when I gooped a bit too much solder over the switch to the external antennae. In my attempt to clear it out, I made it worse. It’s a mess now, and I hope it isn’t a $230+ mistake.

I’m trying to upload a photo to this but I keep getting an error “HTTP Error”…

You can try uploading the image again, but when you add the attachment make sure there is a green checkmark next to it before hitting submit. Or you can always host the image somewhere else like Google Drive and link back to it.

Hi Brandon - thanks for the quick reply. Here’s the link to the file in my google drive.

https://drive.google.com/file/d/1Rz4kpY … sp=sharing

It would appear that the traces have been pulled up. You could salvage this by using wire to connect everything back together but be careful when making these repairs.

Where would I solder the ends of the wire?

Like this?

https://drive.google.com/file/d/1G7eEhv … sp=sharing

https://drive.google.com/file/d/1lCohGo … sp=sharing

The schematic shows the resistor C7 between the solder jumper and the u.FL connector… where might I find the C7’s resistance? It might be easier for me to connect to the back side of the PCB’s resistor…

While the schematic shows it as a capacitor with a value of “0.0”, the picture you posted has a 0-ohm resistor on the board. As for fixing this, you are working with an RF trace that should have a controlled impedance. Your repair should follow the size and position of the damaged trace as closely as possible.

/mike