Thanks for posting this topic, it both answered what was wrong with my PLM and how to fix it. Indeed mine is about 2.5 years old now, but the issues started a couple months ago. The issues didn't seem as severe as others. I would notice it stop responding and checked to see that it's LED was out. Sometimes unplugging it and plugging it back in was enough to get it to work for a few more weeks, sometimes it needed to be unplugged for some time before working again.
Ordered from Digikey to cut the Canadian shipping costs to $8 (remarkably delivered in under 24 hours, ordered 7:30pm one night, delivered the next day at 2:30pm) so I made a few substitutions I hope were suitable for what Digikey had available in small quantities:
Replace YICCON 6.8uF 250V cap with ESX106M400AH4AA 10uF 400 volt Substituted ESG106M400AH4AA -- long life version of ESX
Replace FUJICON 100uF 25V cap with UTT1E101MPD 100uF 25 volt
UTT1E101MPD
Replace SAMCON 10uF 35v cap with EKY-500ETD100ME11D 10uF 50 Volt (2 of these) Substituted EKY-500ELL100ME11D -- same part with different leads
Original part available in large quantities
Replace FUJICON 10uF 16V cap with UTS1C100MDD 10uF 16 volt Substituted UTT1C100MDD1TP
Original part available in large quantities