| This power supply is compatible with all HP LaserJet 8100 and 8150 series
printers
part numbers: RG5-4357, RG5-4300, C4265-69006, C4214-69020
The problem:
The LaserJet 8100 and 8150 series printers are notorious for the failure of their Low Voltage Power Supplies (LVPS). If the LVPS has gone bad, you will usually see a 50.1 fuser error on your display. In some cases a 50.1 error will mean a low fuser temperature and your fuser has failed, but our experience has shown that at least 80% of the time it is the LVPS . Here's a quick check to determine if the power supply is really the problem: borrow a working fuser from another 8100/8150 printer and swap out your fuser. If the 50.1 error does not go away with a working fuser in place, you need to replace the Low Voltage Power Supply.
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