Aporte original por: TomBilliodeaux ,
I have a Brother MFC 6935 ink jet using LC 3029 cartridges. It won’t print due to ONE color being out of ink. So what i did (until my new ink arrived), took the Mag cartridge that was out, and mixed a solution of Isopro Alcohol and water with 1 drop of Dawn. Used 10 % Iso and 90 % water. Use a syringe and needle to inject about 5 ml into the cartridge. mixed it up and inserted into the printer. It no longer gave me the “out of ink” mssg”. I set my printer on my computer to print “Gray Scale” to avoid too much mixture going to the print head.