Can't find this fuse anywhere. I've checked ACE Hardware, Radio Shack and several sites on the web. BUSS AGA 3A 125V This fuse is the standard 1/4'' dia and 9/16" long. Any help will be appreciated.

Here is one website I found doing a Google search for "BUSS AGA 3A".

http://www.kenselectronics.com/lists/fuses.htm

AGA3A is listed for 0.66 each.

These are not that rare or odd, keep in mind you can look for and use any other brand, such as LittleFuse, as long as it is 125 Volt 3 Amp rated, and of course ,the same size.

Any trade supply in your area? Electrical, electronic, even HVAC suppliers will have it.