the printer is not that delicate..
i would just go to - replace printheads.
pull all the printheads out...
check if the contacts are dirty - if so clean them... ( on printhead and carriage)
close without printheads.. let it do its routine.. .
put the printer out on top. and then put the printer out on the rear. ( also if top does not work)
pull the plug..
get all the ink out... let it rest some time ( day) then start up ( rear on button) with nothing in it and do what the printer ask you.. use the new Y/M print head...
cheers!
PK
Just Pull the plug in back. Turn the on/off button to off.
Plug it in, and as the carriage moves toward center, quickly unplug.
Move the carriage to the printhead replacement position on the right.
Pull ALL printheads and put them in a big plastic bag.
Pull all the carts - put them in a big plastic bag.
Shake both bags vigorously.
Let printer sit unplugged overnight.
Plug in printer next day turn printer on from back using on/off switch.
Wait for it to ask for the ink carts.
Plug them in one by one and wait for beep - go on to next.
Wait for printer to ask for printheads.
One by one replace.
See if you can get through the sequence. If the yellow says "no go" keep replacing with all the yellow printheads you have.
Hate to say it, but if it doesn't work, do it again the next few days, same routine, up to three times.
If no luck by that time, call support again and tell them to keep figuring it out.
PAIN IN THE ASS. But well worth it if/when you get it back running.
I won't tell you it's maybe a print mech board because that leads to spending a lot of money and pain.
Look for one that's running if you've reached your last straw.
Mark