Dz60 - Can i fix the circuit damaged by using milmax.

[hisimomo]

Hi everyone,
I recently got the dz60 soldering PCB from my friend, and after soldering the switches onto it, almost every key in row 3 didn't work. From what I've known, it seems like the circuits were damaged. I think placing the bridge might help. I got the map for DZ60 but have no idea how to read it. Then I saw a post saying that you can fix it by using Milmax, so can anyone verify if this information is true or not?
Thanks to all for reading. English is not my language, so please ask me anything if you do not understand.

[hisimomo]

https://imgur.com/a/G5CDjlq

[Findecanor]

I suspect that what you read about the  Mill-Max socket might have been for a very specific case. It is not a general technique AFAIK.

You will have to find where on the PCB that it is damaged, and solder a bridging wire over it. One end of the wire could be anywhere on the row that currently does not work.
There have been several revisions of the DZ60 that might be different, so it could be difficult for anyone to give more specific advice.

[holyattribute]

I also read about the case of fixing it with Mill-Max, however it was quite complicated for me. I took a look at the broken PCB and I soldered a jumper wire across it but it still doesn't work.

[carritabrol]

It really depends on how rough the damage is.

If the board only lost a pad, you usually still have a good chance. You can scrape a bit of copper, add a tiny bit of solder, and run a thin wire to rebuild the connection. It looks a bit messy, but it works and many people do this on keyboard PCBs.

If the trace is torn, the repair takes more patience. You need to find both ends of that broken line and link them with a small insulated wire. It is slow work, but the board can still live if you stay calm and go step by step.

If several pads are gone or the area is burned, the fix gets much harder. At that point the repair may take more time and tools than the board is worth.

If you want, you can tell me which switch position is damaged or share a short description of what you see. I can help you figure out the easiest path to bring the DZ60 back to life.

[JonathanHamilton]

Hi hisimomo,

It sounds like some traces on your DZ60 PCB might have been lifted or damaged during soldering, which is why row 3 isn’t working. Using Milmax pins alone won’t repair broken circuits—it just provides better switch connections if the pads are intact.

To fix damaged traces, people usually use one of these methods:

Wire bridges: Solder tiny wires to reconnect broken traces. You’ll need a multimeter to trace the connections and ensure continuity.

Conductive paint or pen: For small breaks, a conductive pen can restore the connection.

Replace the PCB (last resort): If too many traces are damaged, it might be easier to get a new PCB.

Regarding the DZ60 map: it shows which pins connect to each row and column. You don’t need to fully read it—you just need to identify where the broken trace runs and bridge it manually.

If you want, I can explain step by step how to check and bridge a broken row safely.

[jasonwhite]

It sounds like your DZ60 PCB might still be salvageable! Mil-Max pins alone won’t fix broken traces, but adding small wire bridges to reconnect damaged circuits usually works. Take it slow, check continuity with a multimeter, and you can often bring a row back to life without replacing the whole PCB.

[HannaLee]

If the Mil-Max installation damaged the DZ60 PCB, it depends on how serious the damage is. Minor lifted pads or scratched traces can sometimes be repaired with jump wires or careful soldering. But if multiple pads are gone or the traces are torn too deep, the board might not be recoverable. A clear photo usually helps people judge the repairability, because some fixes are simple while others just aren’t worth the effort.