TECH TIP: HP OfficeJet Printhead Cleaning: https://www.youtube.com/watch?v=1ZqJSerkGu4 --- If you have installed a new, refilled or aftermarket (3rd party) HP950 951 cartridge (or HP950XL 951XL extra large ink tank) into your #HP #OfficeJetPro8600 (#HP8600) printer and you observe a #Cartridge #Problem alert or #error #message on your HP #OfficeJet #Pro #printer then it is possible that the internal PRINTHEAD may have a bent or #damaged contact #pin or pins. When the #HP950 #HP951 (#HP950XL #HP951XL) cartridge is installed these pins make contact with the #Internal #PRINTHEAD. To verify pin condition, remove all 4 ink cartridges and using a flash light, carefully inspect the internal #PRINTHEAD contact #pins for visible #damage. Each #pin should be protruding outwards as shown. If the pin is bent down, it is possible to gently pry it back up with a small screwdriver. If a pin is broken, then the PRINTHEAD will need to be replaced. It is also suggested to check and wipe the cartridges electrical contacts. A common cause of the “Cartridge Problem” message is the gold contacts found on an electronic chip on the body of the HP cartridge being obscured with ink residue (dirty ink) or surface damage to the smart chip contacts. Separately, printer error messages which may signify a PRINTHEAD problem include “Ink Cartridge #Failure”, “#Cartridge #Damaged”, “Printhead #Failure” or “The following cartridges are #not #intended for use in this Printer”. Additional corrective steps should the error remain: 1. Remove your new cartridge and replace it with the old one. 2. Replace the old cartridge with the new one. 3. Remove the new cartridge. 4. Turn the printer off using its power button. 5. Unplug your printer at the wall, wait 30 seconds, reapply power. --- Supported HP 950/951 Ink Cartridges 950 Black #CN049 951 Cyan #CN050 951 Magenta #CN051 951 Yellow #CN052 950 XL Black #CN045 951 XL Cyan #CN046 951 XL Magenta #CN047 951 XL Yellow #CN048 Supported Printer Models: HP OfficeJet Pro 8100 HP OfficeJet Pro 8600 HP OfficeJet Pro 8600 HP OfficeJet Pro 8600 Premium HP OfficeJet Pro 251dw HP OfficeJet Pro 276dw MFP HP OfficeJet Pro 8100e HP OfficeJet Pro 8610 HP OfficeJet Pro 8615 HP OfficeJet Pro 8616 HP OfficeJet Pro 8620 HP OfficeJet Pro 8630 HP OfficeJet Pro 8100 N811d HP OfficeJet Pro 8600 N911a HP OfficeJet Pro 8600 Plus N911g HP OfficeJet Pro 8600 Premium N911n HP OfficeJet Pro 8610 A7F64A HP OfficeJet Pro 8620 A7F65A HP OfficeJet Pro 8625 HP OfficeJet Pro 8630 A7F66A HP OfficeJet Pro 8640 HP OfficeJet Pro 8660 HP OfficeJet Pro 251dw CV136A HP OfficeJet Pro 276dw MFP CR770A --- The average person could easily agree that finding low cost #ink or #cartridges is top of the list when searching, i.e. #HP950 or #HP951 #inkjet #printer #cartridges, since originally branded ink is quite #expensive. Is refilling your #HP #OfficeJet / #OfficeJetPro ink cartridges, purchasing aftermarket 3rd party cartridges or signing up for HP’s #Instant Ink #subscription #program the better deal? Let’s look at the #HP Instant Ink program and real world numbers based on my own experience over the past few years. TECH TIP: HP OfficeJet Printhead Cleaning: https://www.youtube.com/watch?v=1ZqJSerkGu4 --- For additional HP printer usage and #printing #troubleshooting tips, for example observed ‘cartridge problem’ or ‘printer failure’ errors, refer to my other #Uncle #John #Hulka #technical resolution #videos.