Head "Starving" of Ink - SP-540v

Hey Guys,

I've got an intermittant problem where the ink head appears to 'starve' of ink and start printing nothing. It corrects if I run a head clean or pull ink through once the captops are in place.

Started on the black/cyan head originally, new head cables seemed to have fixed that. But now its moved to the yellow/magenta head - I've replaced those head cables (again) incase they were damaged.

Does anyone have any suggestions as to what it could be? Magenta/Yellow head is 6 months old, Black/Cyan is just over a month old.

Thanks in advance for any suggestions.

 

haha, its the only way to learn. I bet you went through 100 other possibilities before you noticed two o-rings .

Dampers are new, captops are seating correctly as it has the same resistance as always when I use a syringe. I replaced the M/Y Head Cables and the problem seems to have been solved now. If it comes back again I think it could be the transistors on the main board - However I'd not expect that to be intermittant as it would either be open or shorting, but intermittant faults with transistoris have happened before.