Problems with left head

[meris]

Hi
I have Mutoh Rockhopper I for few years, and now have problem with primary black color. The problem is, actually two problems, the lines are split (compare cyan and magenta) and missing two top lines of black.
I tried to soak the left head with no luck. Also increased rank number to I think 17115 on that head, no luck again!
What is problem??? I hope is not time to change head

Any advice will be really appreciated.

Thanks
Meris
P.S. Do not pay attention on LC and LM, I'm not using them!

 

[elsignshop]

try the dampers and check the o-rings first, my mutoh Jr had the same problem but it ended up being the o-rings and the fact that i was using that win-com ink. i changed back to original mutoh ink.

 

[meris]

Thanks for quick respond, but that's not the problem. I checked both and damper and o ring, but all are fine!


Any other ideas???

 

[meris]

Any body else has any ideas???

 

[kffernandez]

i see overspray on the black. that usually tells me that either (1) there's a clog somewhere, (2) head is having electrical problems [maybe due to age] or (3) the ink isn't compatible with the head or just a bad batch. [too dense]

 

[meris]

Thanks for thoughts ....

Printed fine before with this ink, so doubt is ink problem. Clog, maybe, but I soak for long time that head, and no changes. ... Looks like the worst case scenario! Time to change head.
I guess there is no head repair possibility???