Solar water heater collector panels

[Hotinhawaii2]

Anyone know where I can purchase a replacement solar water heater collector panel or two? I am no longer a licensed contractor but am well equipped to do the work myself. I just need to find where I can buy a collector panel.

I'm solving my own problem here! I just watched a video about repairing a leak inside the collector panel. I'll give that a shot first. Just need some flux and solder and time. I'd still like to know where I can get a panel though.