Yes, your PC has lots of little capacitors.. but don't go looking at your moniter.. it has huge capacitors.. and i have inadvertently discharged a 40 volt capacitor.. (a lot bigger than a chicklet!).. and trust me, 40 volts is no fun.. monitor capacitors can be quite high voltage.. 200 to 1000 volts... not something you want to accidentally discharge.

and yes, mobile home still use gas powered refrigerators.