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Need Help VJ 1624 wont print black for long.

Buzzefretz2000

New Member
My Printer will print black for about 5 minutes and then black goes away, one side of the damper at a time.
Here is the chain of events.
I put in a new printhead and maintenance station and new dampers,
After a cleaning I get a perfect pattern, all nozzles firing, but black fades out after about 5 minutes.
I've tried 2 new dampers, I switched out every circuit board I could find (4)
I switched out the subtank, I did a "little charge", I've sucked ink thru the heads, I checked for clogs in the black ink line, I don't know what else to try.
please, Does anyone have any ideas?
 
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