After following this thread for over a year, I had to finally do something as the spastic ER42 was coming up at supper time. I was at the point where I'd turn off the breaker, wait 10 sec and then when I'd turn it back on my wife would immediately turn on an element...
Although a successful repair, it's not as easy as it seems for someone that's not familiar with soldering (ie. me). I suggest you take some time to google common soldering procedures and remember to be patient.
As for purchasing the capacitors, I searched locally (I'm in Montreal, QC, Canada) and found a little store that carries all these things for $0.50 or less...crazy cool find and actually spent some time looking up some other gadgets (https://abra-electronics.com/).