Suffered electrical failure, with potential to blow up? (5)
I believe the answer is:
fused
I believe this clue is a double definition.
'suffered electrical failure' is the first definition.
'with potential to blow up?' is the second definition.
(as in a bomb with a fuse)
(Other definitions for fused that I've seen before include "Joined by melting" , "Coalesced" , "in one piece" , "Melted together" , "Combined" .)