Sir ajsooter . . . . .
I remember those from the past . . .in this case circa 1984 . . . where they had used fiberglass blanks as is shown and ~ # 30-32 copper wire, (*****) was being used as a fuse link, and was strung between the two end divots, and soldered to the conventional wire leads as is shown, they then wired into the board at the
YELLOW circles, where conventional #20 ga tinned leads were used..
(*****) Referring to left duplicate illustration
In your original unit . . . at the right . . . some of the remnant wire is seen dangling down at the bottom.
Use a more conventional 4/10 amp fast blow pigtail fuse to replace it with.
AFTER . . .isolating the overload cause and correcting.
BLOW UP . . . . .
73's de Edd
.....