My HP8610 printer was fine. I shut it down for the night. Next morning, it would not turn on. I changed the power cord and verified the cord worked. I installed a new internal power adapter. Still no power, no lights, no leds, no nothing.
And I did the usual HP Support Rep suggestions to the point the next thing to do was to have it serviced by HP. But warranty expired about 2017.
Also, I bought a used HP8610. The black was fine. The colors were smeary. So I cleaned the print head. But now the HP8610 says all my ink cartridges are damaged. So I replaced the cartridges with new HP 950/951xl ink cartridges. It was happy for about 5 minutes and now says they are all damaged and to replace them.
Also, on my "no power" HP8610, how do I move the print head unit to the left so I can remove the cartridges out of it. No power remember? There a carriage release lever to do so, or so I heard, but where is the carriage release lever?