Well the one that I replaced was a resistor because I could see a couple of coloured rings but couldnt tell what colour the other rings were,
In mine only one section of the LED's had gone out, about a dozen.
they must use both diodes and resistors on the different models
Would I be right in saying to identify which you have, diodes are usually black with a silver ring around them with the diode symbol, and the resistor is usually cream coloured with coloured rings around them to show resistance value
Cheers