[16 December 2020] I had one of
these USB wi-fi adapters fail:
computer was no longer
recognising it and I tried it in
another computer with the same
result, so I replaced it.
was curious as to whether there
was anything obviously wrong
with it inside, so I prised
apart the plastic cover, and
twisted out the circuit board
from the other half of the
casing. I then slid back the
metal shroud from the plug end.
enough there is a scorch mark to
one corner indicating a failed
component (peeling off the thin
plastic layer showed it more
Perhaps it wore out with age or
suffered a power surge.
component (either a capacitor or
resistor) could be replaced if
the correct value of the SMD
component could be determined...
although I did break the plastic
when twisting the board out.