The ink cartridge light is flashing on my HP Deskjet 5650 printer. I have followed the instructions for replacing the ink cartridges and tried 2 different sets of cartridges. I have cleaned both sets of cartridges. I have followed the entire troubleshooting guide for the printer - 3 times. When I put in cartridges, the light continues to flash. If it was working right, it would print a test sheet. Can anyone help?Because it's happening with two different sets, you probably realize the problem is with the printer. It is not detecting a cartridge. At the very back of the space where you insert the cartridge, there is a contact strip. It aligns with the copper-colored strip running up the back of each cartridge. Try cleaning that part in the printer (for both cartridges) *gently* with a cotton swab moistened with isopropyl alcohol. Take a look at the spring-loaded cover that you lock over the cartridge when installing. If it is cracked or damaged in some way, the cartridge won't sit properly in the holder and the light will flash. These are two things you can check yourself to determine if your printer requires service or replacement.
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