melting would be from excessive heat, but if it had excesive heat, that should be from excessive current, but if it had excessive current then the fuse should blow,,,, right?
so i don't know why it would be hot and not blow....
seems like it would blow the fuse,
hook up an ammeter (if you have access) just for kicks in place of the fuse and see how many amps the circuit is drawing
thats where i would start
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