Re: Epson 4900 premature printhead failures
I have a similar experience, albeit on a much more well used 4900.
My printer is 2 1/2 years new and, from the beginning (I now realize) had a leak in the yellow channel where the ink tubes connect to the ink selector.
This manifested as yellow ink smears on prints a little more than a year after I bought the printer (and shortly after the warranty ran out). I had a few exchanges with Epson service, all ending in 'send us printer' [sic]. I wasn't interested in spending $500 in crating and shipping charges plus whatever Epson service chose to nick me for an uncertain fix so I bagged that and put up with occasional ruined prints.
Over 2 1/2 years I have run hundreds, perhaps thousands, of sheets and about 20 rolls of canvas/rag paper (much of it purchased from specialty paper suppliers such as Breathing Color and others) through this printer, selling many of the prints to clients in the Madison, Wisconsin area; I would call that moderate use. The yellow smears were a fact of life and only occasionally affected print product.
Up to now this printer has only seen Epson ink cartridges - that will soon change - read on.
The yellow ink tube/ink selector leak eventually flooded the ink mark sensor with yellow ink and caused false paper jam/paper eject errors. I tore the carriage assembly down (the unit was off warranty by this time and, as before, Epson's response to my detailed requests for assistance was 'send us printer' [sic]), cleared the ink mark sensor of yellow gunk, cleaned another two ounces of yellow ink from he carriage/print head assembly and reassembled the printer (if you are interested in a series of photos of an unclothed 4900 look here: http://www.sixscrews.com/Epson_4900/index.html).
All works now - no false paper jams and no ink tube/ink selector assembly joint leaks - except the cyan channel no longer prints. It flushes Epson ink and Jon Cone's Piezoflush into the waste ink tank with great enthusiasm but does not print a test pattern or anything else. I'm not interested in wasting my $$ on Epson service and Epson, in its grasping way, no longer sells print heads to civilians like me. If there were any other options (Canon? can't hold a candle to the Epson in terms of gamut or media handling), I would bag Epson as a supplier but I have a significant part of my photo businesses (such as it is) in running prints on this unit, so I'm probably going to buy a refurb with a three year warranty and take my chances.. AND stop buying ink or any other supplies from Epson - other ink suppliers have shown that they can do a much better job of servicing my needs and there are ways of avoiding wasting $35 on replacement waste ink tanks (think paper towels and chip re-setters).
The only positive aspect of this experience is that I can regenerate the unit as a greyscale-only printer using a eight shade black ink kit from Jon Cone's operation - I can re-jigger the standard greyscale RIP to use a different ink channel and abandon the cyan entirely. I have previously done this with an otherwise healthy 4880 with excellent results - B&W prints done with this setup are much more detailed than ones done with the 'native' B&W settings of the 4880 or 4900 series. Some of the original images are on my websiite - warrenbuckles.com
I realize that few 4900 owners have the capacity to tear down and re-assemble their printers (I developed my own belt tension measurement device with a reference microphone and a digital oscilloscope, saving about $2k on a similar unit from Epson) but the availability of basic spares for this unit is pathetic. Epson is killing itself by restricting sales of heads and other key components while protecting the cash flow of otherwise incompetent repair subcontractors. This is basically similar to Apple's strategy - keep the repair service, such as it is, in the hands of their dealers (Q - if an Apple product is so easy to use, why does it take a 'Genius' to fix it?). Vendors hide behind flawed laws such as the DMCA to keep people from repairing products they own - this is not a free market but more like Putin's Russia or Imperial China.
wb