I have Aquarite SWG and like many other owners the varistor(black little component) burned out. My unit is just over a year old and warranty is for parts but not labor--I called Hayward and said I need to call one of their contracted people, even though I can see the varistor is burned out and cracked. I already ordered the $3 part from digi key. The problem is that I am having trouble desoldering it in order to put the new one on. I even bought a 45 watt desoldering gun but it seems that there is some protective coating over the solder joint which keeps me from heating up the solder to melt. Any suggestions would be appreciated. I bought a new mother board on line from amazon in the meantime and everything is working ok but I would like to at least have a back up motherboard now.