HP 8150dn error 50.1

[jhuddleston]

Have an HP8150DN printer and get the following error, 50.1. Looking at the HP website this could be a fuser problem. Traded out fuser and printer will still not work. This website say to replace the engine controller board. Is this a difficult fix? Where do you get such a board and how much does it cost?

[ptjeff1]

Most likely it is the low voltage power supply, not the engine control board. This is a common problem with the Laserjet 8100 and 8150. First swap fusers; if that doesn't fix it you'll need the low voltage power supply.