My PA246 just died after 9 years of bullet-proof service. It started acting up about five weeks ago, cycling sometimes endlessly through the various video inputs, never settling on the active one. Sometimes a hard re-boot would work, sometimes not, and then about ten days ago it simply refused to power up at all. I suspect (because it's common) dying/dead electrolytic capacitors in the power supply. I guess we'll see!
My PA246Q died in late 2018, after about seven years of service. Hopefully I can bring it back to life for use as a secondary/spare/give-away.