Reviving an R2400
I don't mind ordering a new set of IR ink and seeing if I can get the printer going again. I'm sort of reluctant to order OEM carts because of the cost but realize that may be the best approach under the circumstances.
If you have not used the CIS for a long time, ink can sometimes dry out in the lines between the CIS ink bottles and the dampers. As long as this is not the case, I see no reason to swith to OEM carts to do the head cleaning.