Suffice to say I am beset with failing equipment sometimes and my HP plotter is the latest casualty. Dead as a DoDo so I've removed the power supply with the rather optimistic hope of finding a fault however I can find no information on these units at all so not even sure what to test or how. Visual inspection doesn't show any obvious capacitor problems but that's about as far as I can go without further info or more knowledgeable input. There appear to be no new replacements available only ones removed from other printers and 'presumed working'. Has anyone also suffered with a power supply problem on this printer or any ideas. The printer hasn't had a huge amount of use and I bought it new about ten years ago.