
This article is from the Sony video game controllers FAQ, by Lord Xarph and his Flying Circus xarph@blueneptune.com with numerous contributions by others.
This is a big "iffy" question. A number of different things could
cause this, but the most common incidents occur when someone uses a
non-licensed controller (as in, a cheap $10 controller you pick up in
the bargain bin). Sometimes these controllers aren't exactly wired to
spec, and tend to blow fuses in Playstations. Obviously, the solution
is to go in, find the blown fuse, and swap a new one in, but this
isn't always the case. Your best bet is to have a professional test
and repair the Playstation. The hell of it is that if Sony finds out
you were using an unlicensed peripheral, they *won't* fix it.
 
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