Lexmark Copier/Printer 642N, Intermintent partial image (I am going nuts with this)

[Doug James]

Changed the transfer roller, power supply, drum unit... I believe the charge is shorting out but not sure where. (I leave, it's working. An hour later, customer calls "It's doing it again" ugh) Any ideas would be greatly appreciated ...

[HP:guy]

The manual lists print cartridge> high voltage contact> HVPS> Front cable HVPS> Print head.

[Doug James]

The manual lists print cartridge> high voltage contact> HVPS> Front cable HVPS> Print head.

THANKS SO MUCH !!