In this video I talk about a bad ground on the header I previously soldered on. The header is subsequently removed and replaced with an appropriately sized header.

To access and interact with the serial console (UART), we need to have a functioning header with at least 3 pins (Ground, TX and RX).


Warranty Disclaimer: By opening and modifying your router you forfeit/nullify all warranties. If you break your router while modifying it like I do in my videos, then it is your own fault. Soldering on equipment is not without risks. (I haven’t managed to break my routers yet though.)

Safety Disclaimer: Soldering irons are tools that should be handled properly as they can easily cause injury. Soldering thread containing lead is toxic and should not be exposed to open wounds. If you do a lot of soldering, then you should consider wearing some thin gloves. (Not plastic!)

Always wash your hands after handling lead. If you’re going to eat something while soldering, then wash your hands first. Keep food and drinks away from your working table too.

Lead-free solder thread is not without risks too, as it’s harder to use, and the increased fumes it may produce are in return more toxic.


Soldering Iron:
– Velleman VTSS4N (

Soldering Thread:
– 60Sn/40Pb (60% Tin / 40% Lead) 0.6mm with rosin/resin core (


Stay tuned and subscribe for more upcoming videos showing actual hacks!


Twitter: @CrazyDaneHacker