HP 672c no yellow - fixyourownprinter.com

	Re: HP 672c no yellow by Denny Conway (5/7/04 12:41 PM) reply	+ / -
Larry: First simply try cleaning the electrical contacts carefully and gently, with Distilled Water on Q-Tips or on a lint free rag. Its more likely that the electrical contacts on the ink cartridge, or inside the Print Cartridge Holder Assembly, may simply be dirty. Using damp Q-tips [not wet or dripping], gently and carefully wipe off the copper colored electrical plates on the cartridges and the electrical contacts inside the holder assy. Then do the same to the face of the Print Head Assembly thats located on the end of the ink cartridge, where the ink comes out. Its best to use "Distilled Water", because it has less chemicals and minerals in it, than tap water and regular tap water can actually cause additional problems. Use new dry Q-Tips to dry off all the electrical contacts after cleaning...If there is an actual air bubble, you may have to simply replace that color cartridge. You could try taping over the end of the ink cartridge [with scotch tape, in both directions], where the ink comes out and then shake the cartridge to see if the air bubble dispurses or not. You could also try holding the ink cartridge under running hot water and see if you can get the yellow ink to start to flow again. HERES SOME PREVIOUSLY POSTED MESSAGES/REPLIES ON THAT WATER TRICK: Anonymous [actually Kevin] 2/08/2004 18:34:37 Re: HP DeskJet 1220C Prints only Pink & Black. I recently had this problem with my HP870Cxi. I thought the color cartridge ran out, so I put in another one that was in a sealed box, but was bought a while ago and says to install before Aug '98. I tried running it through the cleaning cycle, and cleaned the electrical contacts, and took apart the printer and disconnected and reconnected both sides of the ribbon cable that goes to the carrier. After none of this worked, I took the old cartridge and ran the nozzles under hot water for a while. This must've cleaned out a blockage, and then I could see all colors coming out. I did the same thing with the new cartridge, and now they both work. It took a couple cleaning cycles until the ink wasn't watery, but it works fine now. Kevin...Joe 2/09/2004 05:40:50 Re: HP DeskJet 1220C Prints only Pink & Black. Anonymous and Kevin from my other post hit it. I took both their ideas. Kevin said he soaked his in hot water and Anonymous said he ran his under hot water. This works. I had 3 cartridges and all three work after doing this. I heated a cup of water in the microwave for 1 minute 30 seconds and put the whole tip end in the water for about 15 minutes. Then I ran it under the facet with the hottest water that would come out. I did this until I cold see some of the blue on the tip coming out. I was getting Magenta/red the whole time. I then dried everything off very well and let the cartridge air dry for about 1/2 hour. I installed it and ran the clean function about 4 times and I now have color. Thanks, Joe.....I hope this helps, but if not, just buy a new ink cartridge. Good Luck! Denny Conway