A friend has a ZyXEL mains network adapter (model no. PLA4211).
It's suddenly just stopped working with no lights coming on at all (normally 3 LEDs visible). If I put my ear right up to it, I can hear a faint rapid ticking coming from the unit (4-5 clicks per second).
After making a triangular screwdriver I've opened it up but to my admittedly rather untutored eye, I can't see anything amiss. No sign of overheating, no bulging capacitors, no sign of anything leaking.
I can't help thinking that the ticking can't be normal. Any suggestions?
Tim