HP PSC 2310 - moisture under scanner glass

[Lena Fiszman]

I recently had to take my PSC to be checked out by a technician because
there was moisture on the underside of the glass which leaves marks on
scanned images. The technician removed the moisture and said that it occurs
because glass seal is not 100%. Less than 2 months later and it has
happened again. I contacted Hewlett Packard and all they can say is that I
need to buy a new machine! They take no responsibility and say I should go
back to the vendor.

I have an extended warranty and if I attempt to take the machine apart - the
warranty will be voided.

Has anyone encountered this problem before and if so, how do you resolve it?

Many thanks,

L. Fiszman

 

[degrub]

The only way i can see getting condensation under the glass is if the
outside air temperature is cold and lowers the glass temperature below
the dewpoint of the air inside. a couple of questions - the tech
confirmed it was water ? The reason i ask is sometimes platiciser from
the case will coat the underside of the glass giving a streaky filmy
appearance. If it was water, is there an cold air vent blowing on the
scanner ?

regards,

 

[Don]

I recently had to take my PSC to be checked out by a technician because
there was moisture on the underside of the glass which leaves marks on
scanned images. The technician removed the moisture and said that it occurs
because glass seal is not 100%. Less than 2 months later and it has
happened again. I contacted Hewlett Packard and all they can say is that I
need to buy a new machine! They take no responsibility and say I should go
back to the vendor.

I have an extended warranty and if I attempt to take the machine apart - the
warranty will be voided.

Has anyone encountered this problem before and if so, how do you resolve it?

It's common for all flatbeds to develop a fog on the underside of the
glass. It's not moisture as much as evaporation from various
electronic components within the scanner. I remove the glass regularly
for cleaning, about once per week when I scan extensively. If you have
extended warranty then they should do it for you, really.

On the other hand if you want to do it yourself, you have to be very
careful because it's quite easy to get dust in the scanner assembly,
so I vacuum thoroughly before doing this (let the dust settle after
vacuuming before actually opening the scanner). Actually, after that I
vacuum again around the scanner, just to be sure.

In my experience, wet cleaners always seem to leave a residue (others
may have different experiences). Anyway, I now "dry clean" using a
good (real!) microfiber cloth. This seem to do wonders!

One good test of how well you cleaned is to lift the lid and scan
"nothing" (empty glass) in a darkened room. Open the resulting, black,
image in your editor and boost the brightness until black turns to
gray. You'll be able to spot not only the fog but all other debris
like dust and fingerprints, as well as any glass imperfections.

Don.