Need Help Roland vs-640i Printer problems!

[Kewinbang]

I desperately need some help or advice how i should go about this problem.

I bought a vs-640i about 6 months ago. Nozzle test were perfect and everything seemed to work fine. About 2-3 months ago i lost the light cyan channel and it wouldn't print light cyan at all. I then soaked the head and if i remember correct i ran a powerful cleaning and then the light cyan channel came fully back. Then 2 weeks ago i lost the yellow channel together with the light cyan and i found out that the light cyan and yellow were the same damper and that 2 of the 4 dampers was aftermarket and not OEM. I bought new dampers (OEM), changed them. After i changed them i started to lose more and more colors and now i can barely see anything on a nozzle test. I have checked the dampers twice after changing them and i don't believe that the dampers are the problem. I have ran choke cleanings, powerful cleanings, soaked the head twice, checked the captop. I somehow managed to get the yellow and light cyan back for 1 day as picture 4 shows but the day after almost everything is gone.

My next and only solution is to buy either a new printhead or a new printer.

Picture 1 is when i just got light cyan back and then the pictures just highlight the process of losing more and more colors over the last 2 weeks.

 

[jbenz]

Did you check fuses and transistors?
Remember to unplug from electricity and wait 30 minutes before doing anything on the mainboard or printheads until all electricity is gone so this can't cause any further problems.

 

[Kewinbang]

Did you check fuses and transistors?
Remember to unplug from electricity and wait 30 minutes before doing anything on the mainboard or printheads until all electricity is gone so this can't cause any further problems.

I Checked and there is nothing to see. the printer was turned off during the maintance and i always wait a bit to do any work

 

[cornholio]

When you suck on the captop tube, do you get ink in the syringe?

 

[Ewan yu]

You didn’t do anything wrong. The printhead is just slowly dying....
The reason it came back for a short time after soaking is that a few channels, or just the edge channels, could still barely fire.
The machine itself is fine a new printhead will fix it.