I'm looking to install a smart light switch (TP-Link HS-210), and I'm having a bit of troubles figuring out which wires are what on the old existing light switch. I couldn't get a decent picture, but attached a drawing I drew up on Paint... On the light switch I'm wanting to replace (left), there are two black wires going into the back of the switch, a black wire hooked up to the top screw terminal, and another black wire hooked up to the bottom screw terminal which then goes off into the back of another light switch. That other light switch which I'm not replacing has a black wire going into the top screw terminal, and a red wire to the bottom screw terminal. Hopefully either my wording or the drawing I drew made some sense...There's also white neutral wires in the electrical box not shown in the pic. When going through the step-by-step instructions to install the new light switch, it's asking for common or line/load wire, traveler wires, and ground wire, Anyone have any idea which wires are which? Thanks! [attach]99310[/attach]

Hi, Kenmore oven wasn't turning on, so after opening it up I noticed a burned out connection on the controller board of my Kenmore oven. If you look at my pictures, the plastic has melted and there's a piece that came off of the controller/circuit board So I plan to solder the metal piece back on to the board. This is my first time doing this. I plan to watch some youtube videos first. Should remove all the burnt plastic from the metal? What type of solder should I use? Thanks!