
It's a Focus FK-2001 with white Alps clone switches (they say "B19" on the switch housing). When I first got it, it was quite dirty and many of the keys were chattering, but otherwise all the keys worked fine. So, I took off all the keycaps and washed them, and while they were drying I dusted the inside of the board off with compressed and and thoroughly cleaned the case and so on. I then put the keycaps back on once they were dry. The keys had stopped chattering, but now the spacebar no longer worked. When I opened its switch up, I discovered that somehow the front part of the contact leaf had separated from the back part and was now stuck inside the keycap. I tried to put the switch back together so that the front part of the contact leaf would be in the right place, but to no avail—it still won't register keypresses.
Here's the snapped-off front part of the contact leaf:
Is there anything I can possibly do to fix the switch, or does it need to be replaced? Presuming it does need to be replaced, all I have is a cheapo soldering iron from Harbor Freight I've almost never used—would that be good enough to do the soldering work or do I need a nicer iron? I'm worried because I have very little money and a nice soldering iron is sort of out of my budget.
