Canon MB2350 - unable to replace faulty cartridge

[palombian]

I had nozzle checks with a blank color recovered by soaking (but I didn't continue to print as you probably did).

To prevent further frying of the printhead, and more serious of the logic board, masking the contacts of the cyan color could help (but you are entering specialist terrain here).
In your case this limits the printer to B/W.
My son runs a printer for 2 years this way.

I have no experience having a failed printhead (blinking/error messages) damaging the logic board (can't confirm the 50:50 chance, I could have had luck), so you could as well continue to print in B/W as long as possible.

Do not forget that for Canon a printhead is a consumable, just as a set of carts.

 

[martin0reg]

For soaking I simply want to say that the printhead
- not only should soak from the bottom, with the nozzle plate "sitting" in the cleaning fluid
- but also should receive some fluid from top, in other words from where the ink would flow in..
Best way to do this is:
http://www.printerknowledge.com/threads/where-to-buy-a-printhead.10338/page-5#post-94136
..but if you have no fitting tubes you can only pour some fluid in the open chambers where the ink inlets are.

And you are right, without any blinking or error messages chances are high that a new head will fix it. But it is up to you!
I have recommended a new printhead for my brother's canon just some weeks ago... sadly it did not help.. I have to add that there was in fact an error blinking and message (indicating a bad printhead) and the printer did not print no more at all..

 

[Alessandro]

Ok, in my print head the holes where the ink enters are placed horizontally also I don't have any syringe at home so I'm using this to push liquid into those holes.

I pull the head out of soaking now and then and push some liquid inside the cyan hole using the dropper

 

[martin0reg]

Now I have to admit that I don't know this kind of design .. didn't even realized that you are talking about a Maxify.
But anyway just try it this way and see if there will be any effect...

 

[Alessandro]

May the night bring good news

 

[The Hat]

There is little chance of your logic board been damaged, simply because you can print with your current damaged head in the printer, a new head will make everything work as normal.

You can also continue to use the damaged head for printing but you’ll have no cyan so colour printing will be useless, only black, an alternative is to set your printer to use Matte photo paper and just use your normal plain paper, that will work for you without damaging the printer till you can get a new head.

Please remember if you get the electrical contacts on the back of the head wet when soaking it in your dish, thoroughly dry the head in a warm place before putting it back into the printer, a wet print head will blow the hell out of your logic board...

 

[stratman]

a wet print head will blow the hell out of your logic board...

 

[Alessandro]

Well, this morning after accurately drying and reinstalling, and after a simple clean here is the result:

After the first print I've redone a simple clean but the new nozzle check is pretty much like the one above.

So now, should I keep going with head cleans? Maybe selecting the deep cleaning?

 

[The Hat]

Well miracles do happen, congratulations Alessandro your persistence certainly paid off, but it still may not come back to 100%, if so give it an extra bit of soaking and a second miracle might just occur, but as it is, it may be acceptable to you...

 

[stratman]

Nice! Your print head may not be burned out or have an irreparable electrical failure.

This now looks like ink starvation. Is the Cyan cartridge new and never refilled/modified? Is it an OEM Canon or a third party cartridge? Since the second horizontal bar of Cyan appears within normal limits, did you do a second nozzle check to see if more Cyan filled in in the first Cyan horizontal bar? If not, letting the printer sit over night to let ink to diffuse into the sponge (if there is a sponge in these new Maxify cartridges???) and retrying the nozzle check may show more improvement without anything else done to the print head.

Once you are sure that the cartridge is not a source of the problem (ink starvation), you could try a couple of regular cleanings plus or minus one deep cleaning. I mighty be more conservative and let the print head soak for a day or two and retry a nozzle check - this is part of the individuality of refilling. Then post the nozzle check. Crop the scanned image to cut out just the portion of the printed page instead of posting the entire page. The Canon scanning software typically allows for cropping when you review the scanned image.

One last thing about your nozzle check... there are fine horizontal lines of missing ink (presumably Cyan) in the vertical black bars about one third of the way down in in all the CYM vertical bars. This may be an artifact. If you see them on the actual printed page then this truly does reflect missing ink. This may clear with resolution of the Cyan missing ink. But, they may persist in some fashion as actual irreparable malfunctioning nozzles. This may not, however, mean that printed images will suffer as there may be sufficient other nozzles recruited during printing to make up for the few nozzles lost.