HP Printer: Hardware & Maintenance

HP OfficeJet 200 battery not charging? A repair tech explains the 1-amp requirement almost nobody checks before assuming the battery is dead.

HP printer suddenly printing very slowly? A repair tech explains the Quiet Mode setting that can cut your print speed in half without warning.

HP printer won't turn on and no power light at all? A repair tech explains the capacitor discharge trick most people never try.

HP printer smells like burning? A repair tech explains the real difference between normal fuser break-in odor and a genuine electrical hazard.

HP printer making a grinding noise when printing? A repair tech explains the one test that pinpoints exactly which part is causing it.

HP printer vibrating or shaking your desk? A repair tech explains the physics that make some vibration normal, and when it's actually a problem.

HP Smart Tank 7602 fax not working? A repair tech explains the VoIP line problem almost nobody diagnoses correctly, plus 4 other real fixes.