I have a TS-259 that was left unpowered for a few months and now won't turn on it, but can hear a distinct clicking sound but there is no leds and no fan.
Have had HDDs installed and have removed them as well with no success.
Purchased new power supply with same result.
Tested both old and new power adapters with multimeter and got a 12V reading.
Performed continuity test on the power sockets ...