LaserJet 5550hdn: LaserJet 5550hdn display lit but blank

Just got a 5550hdn out of the Bay.  Screen lights up but is empty, I looked for loose wires.  Covers pulled off the coast and looked for something obvious.  Shot on hard disk and network card and turned on again with the same result.  Any ideas what to try next?

Thank you for your time

Ben

Wow!  You are good!  Out of memory DIMMs and took an eraser to pencil in the unit started and contacts.

Thank you very much!

Tags: HP Printers

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