Question about HP LaserJet 4si Printer
Hi, When I've worked on printers with this problem in the past it usually comes from the high voltage power supply going bad. There is also a low voltage power supply that runs everything except the actual printing so your printer will still operate without any errors but the print quality will go bad. The high voltage power supply is located under the bottom of the printer and it's too hard to replace. I can't advertise for any place on this site, but if you type in the part that you need into a search engine and look for parts on everyone's favorite bidding web site you should find the parts you need. Good luck.
Posted on Sep 04, 2007
Tips for a great answer:
Sep 22, 2014 | HP LaserJet P2055d Printer
May 08, 2014 | HP LaserJet 9050 Printer
Jun 17, 2011 | HP OfficeJet 7310 All-In-One InkJet...
Jun 11, 2011 | HP LaserJet 1018 Printer
Nov 03, 2010 | HP Color LaserJet 5 Printer
Mar 12, 2010 | HP Hewlett Packard LaserJet 1600 Printer
Apr 14, 2009 | HP LaserJet 5p Printer
Nov 16, 2007 | HP LaserJet 4si Printer
183 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: