It's possible that the ink nozzle has become blocked. If the printer has a removeable print head you could try removing the cartridges and sealing them so that they don't dry out, then soak the nozzle in warm water with a little washing-up liquid added. Make sure that you only place the nozzle area in water, as otherwise you may damage the electrics. Give it a good soak, then try flushing through the blocked nozzle, (I use a syringe with a small section of rubber tubing to create a seal.) you should be able to get a fine jet of water through the nozzle. If that does'nt work, it will probably mean a replacement as there's no much else you can do.