Hi!
I used IPA (Isopropyl Alcohol), a pencil eraser on both the cartridge and the
leads in the printer. When then didn't work, I used a narrow piece of metal
to lightly abrade the contact surfaces. Sigh. No luck.
I had an HP Business InkJet 2230 that was given to me without inks or heads.
After borrowing a set of inks and heads from an OfficeJet 9130, I found that
it worked and eventually talked myself into buying the inks and heads for
it. I even got a Token Ring JetDirect module (cheap!) and popped the printer
onto my network.
At first it too was finicky about the yellow head. HP's website said "rub
the contacts with a coffee filter". So I did...and things improved. The
printer actually seemed to work well enough after that, but a few days later
it was once again finicky about the yellow print head. Additionally, I had
noticed that the yellow printhead's life had deteriorated very quickly...it
was down around 50 or 60%. I tried to see if I could find anything wrong.
The page count was somewhere around 26,000 IIRC. Looking around I couldn't
see anything obvious. The printer didn't appear to have been abused or
mistreated.
Then one night it stopped printing entirely, claiming that the yellow
cartridge was out of ink and (of course) the yellow head needed to be
replaced. I couldn't believe it! Where had all that yellow ink gone?
Well...I found out, upon picking up the printer. There was a vast pond of
yellow ink underneath it. I still don't know where it came from, but I
decided to cut my losses at that point and scrap the printer. I've still got
the JetDirect module and would like to find another EIO-capable printer to
go with it.
I really don't think I like this kind of HP ink system. (Some people really
do seem to like it, however.) The print quality on the 2230 was OK. The
print quality on the OfficeJet is a big disappointment...it has very visible
banding in nearly all of its output and the colors seem rather light.
Fortunately, I was able to use the surviving heads and inks in the
OfficeJet, so it wasn't that big of a deal in the end. I never did find out
what the problem with the printer was, and in a way I'd like to have known
or at least come up with a good guess. Maybe it sat without ink and heads
for too long and that screwed something up.
William