PCB, and soldering

[damnboi]

Hi, im quite new to the community my mechanical keyboard community, my mechanical keyboard has some problems, when i haven't soldered it and tried it with a tweezer it works fine, but when i solder the switch they don't work, I don't know if it's because of the solder or the switch, hope yall can help me out

[suicidal_orange]

Have you tried using tweezers on the problem switches after soldering?  It's possible you have a bad switch or two, it's also possible (though rare) to overheat a pad while soldering disconnecting it from the trace.

If the tweezers don't work post a pic of the PCB and if it's not obvious say what it is (so I can see what should be connected to what in the firmware)