All depends on how the machine has been kept. I've heard of some second hand machines that need considerable scrubbing and general maintenance before they can even begin to perform as intended. It's not uncommon for these machines to acquire electrical problems due to their compromised mechanical condition. On the other hand, I've never encountered any problems with either my cp51 or cp32 other than having to replace drive gears and a few pincher rollers - that and semi annual deep cleaning I consider routine maintenance. Mine get a lot of use and have proved themselves extremely robust but then I received them in clean condition. Either way, it sure beats trying to accomplish critical color correction with trays and extended dry-down times.