On Apr 3, 2015, at 5:38 AM, Robert Jarratt
<robert.jarratt at ntlworld.com> wrote:
Not sure how to tell. The component number marked on the board uses the
prefix "Y". So it is unlikely to be a capacitor or a resistor. I measured
its resistance (in circuit) and it is almost 1K ohm, so it seems unlikely to
be a fuse, unless thermal ones have a higher resistance?
Components marked with Y are usually crystals.
Ian