On mine the 0.047uF capacitor burst, and the 56 ohm resistor burnt. I got replacement parts from Maplin, total cost 83 pence.
Capacitor part number N68CN.
Resistor - they didn't have a 56 ohm, so I used a 68 ohm and a 330 ohm in parallel. Part numbers D68R and D330R.
Steve, July 2009