Reddit reviews CircuitWriter Conductive Ink, silver-based, 4g 

Been around for years.
https://www.amazon.com/dp/B00B88B9KI

http://www.amazon.com/CircuitWriter-Precision-Pen-silver-based-grams/dp/B00B88B9KI

Used properly(thin lines) it dries in seconds. As for ballpoint, the people here who funded the kickstarter say the pen they received barely works. Because silver particles and ballpoint just don't go together well. As well they edited their video to make the pen appear to perform better then it does.

That's why if you watch this video on the ballpoint design, you will see the product they advertise here does have a drying time, and can not be used like a regular pen. https://www.youtube.com/watch?v=dfNByi-rrO4

It is quite expensive, however worth it. Here is a video from LTT explaining the pen.

if it didnt have anything in the inside layers then only the trace is broken.

If it is just the traces they can be repaired with this or something similar.


http://www.amazon.com/CircuitWriter-Precision-Pen-silver-based-grams/dp/B00B88B9KI

My stealth merc has taken quite the abuse, pop, coffee, beer, water... its felt it all. I have taken it apart to clean over a dozen times. For months i've been having intermittent issues that cleaning didn't solve. on 4 keys on the gaming portion i had problems, a couple days ago my strafe left no longer worked.... My keyboard is so worn there is 15 keys worn down to the clear plastic on the full top.

So i got thinking, why not patch up the burnt looking traces with some circuit writer ink? (https://www.amazon.ca/CircuitWriterTM-Precision-Pen-silver-based-grams/dp/B00B88B9KI)

A lot of patience is needed, if you cross a trace, wait for it to dry and scrape with a pin tip. Also start by going over the actual button dots first, top and bottom. let dry under a hot light for 4 hours, assemble and give the keys a try. Dont use the keyboard for 24 hours roughly to give the stuff time to cure properly. 3 of the 4 problem keys were fixed just by patching the dots. the strafe key though took 2 attempts to fix, due to a burnt short trace. The side effect of all this work though has been a bit of dust near my main keyboard F key making it need a heavy press and me being too lazy to fix it.

Tips for the pen:

-Pay a bit more to get my pen at an electronics shop that has a high turn over, that way it isn't sitting on a shelf long

-SHAKE IT WELL, i hooked mine to a sawzall and let'r rip

-for more precision, apply the ink to the keyboard shell in one spot to use as an ink well and dont press the tip on the plastic. Being too heavy handed will mean a lot of scraping later

I hope this helps those who are in this similar issue. i've been kicking myself for buying my wife and i each a new set and chucking the old dirty ones back when they started going on clearance. I just thought they were coming out with a true RGB version, not doing the stupid move and axing the whole product line. I would love to see a new version, i don't even care its rgb or mechanical, i just want it or its layout and am choked i cant even find a keypad with a similar layout.

When my wife's original broke and i couldn't find them at first, we returned many competitors products due to them not feeling right, then i found 2 at bestbuy for $80 buried in a corner. that was the last time i saw them on a shelf... *tears up*

You might be able to repair that damaged edge connector using one of these:

CircuitWriter Conductive Ink, silver-based, 4g  https://www.amazon.com/dp/B00B88B9KI/ref=cm_sw_r_cp_api_rcwTzb8SBTXHG

Of course, for $20 it's probably not worth buying for this one project.

I used a Conductive Ink Pen to overclock an old Core 2 Duo CPU. I'm not sure how this kickstarter pen is much different?

"maybe"

There are two ways to fix the trace

1. Use a trace fixer pen
   
   
2. Use jumper wires, i.e. a wire that goes from where the trace leads directly to where you solder it.
   
   
   

Well, if you're the DIY sort, you could try using a trace pen on it. You will probably have to do some real careful scraping first. Honestly, it looks fixable via that method, as it does not look like it gouges any other layers.

Imma go ahead and tell you how I did it. Get one of those pens to repair traces. Something like this I found it cheaper like for 7 dollars.

https://www.amazon.com/CircuitWriter-Conductive-Ink-silver-based-4g/dp/B00B88B9KI

and just connect the dots. I did all 3 of my Xbox's that way cuz I suck at soldering.

Pretty sure you can use a circuit writer to replace the pad
https://www.amazon.com/dp/B00B88B9KI/ref=cm_sw_r_cp_awdb_t1_RTgCDb4ZZR6XY