Was working on a HP CLJ 5500 ,when I got to the call, was
just "flashing" 2 rows of asterisks in the display.
Was told it needed "Compact Flash Firmware", When I went back,
did that,now display is "blank,dark",.Machine turns on,makes all the
normal sounds,etc, but no display, even after reinstalling
the original flash memory Dimm back in.
Can the formatter bd. be causing this, or any other ideas to try.
I have checked the wires for connection, everything connected. Any
suggestions?
Thanks,
Jack