Took about two hours. Used my variable-temp soldering iron and a vacuum parts handler that I picked up on eBay for less than $20. As you can see in the photo, it looks a LOT like an aquarium pump, but has two vacuum lines and the parts pickers. Simple to operate, just place your finger over the hole on the side and make sure the part is flat against the tip of the picker. It came with two sizes of pickers, both of which look like syringe needles with flat tips, rather than sharp ones. The A/C line cord is too short and it has NO off switch, just a "low" and "high" vacuum switch. However, for under $20, it's not bad. Eggtimer powered up and talks on WiFi just fine. Working through the rest of the tests to see if I got it all correct.