Hi,
this is a bit of an unusual problem. I recently bought a boat and it
came with a sonar unit that has a weird kind of mottling or splotchy
film of some kind on the screen. Almost looks like dried seawater
stains. It looks like you could almost scratch it off with something,
but of course, you risk damaging the plastic screen.
Any ideas what it is or how to remove it safely?

thanks.

waynard wrote:
Hi,
this is a bit of an unusual problem. I recently bought a boat and it
came with a sonar unit that has a weird kind of mottling or splotchy
film of some kind on the screen. Almost looks like dried seawater
stains. It looks like you could almost scratch it off with something,
but of course, you risk damaging the plastic screen.
Any ideas what it is or how to remove it safely?

thanks.

My guess is dried seawater stains, and I would contact the mfg'er if
water and a micro cloth will not clean it. If it is a LCD flat screen,
they can actually absorb cleaning chemicals and destroy the screen. I
only use water and a micro cloth to clean all of my LCD screens.

If it is glass CRT screen, you can try any of the commercial glass
cleaning products, but i would make sure it was made to clean glass, too
many other cleaning products can have mild abrasives than can scratch
the glass.

On Mon, 26 May 2008 05:35:07 -0700 (PDT), waynard
wrote:

Hi,
this is a bit of an unusual problem. I recently bought a boat and it
came with a sonar unit that has a weird kind of mottling or splotchy
film of some kind on the screen. Almost looks like dried seawater
stains. It looks like you could almost scratch it off with something,
but of course, you risk damaging the plastic screen.
Any ideas what it is or how to remove it safely?

Try wiping it with a soft cloth dampened with vinegar.

Casady

On Mon, 26 May 08, waynard wrote:
I recently bought a boat and it
came with a sonar unit that has a weird kind of mottling or splotchy
film of some kind on the screen.

If it's brand new, it almost sounds like it may be the film that
protects the screen during packaging from the factory. It comes on
almost all new electronic gadgets. It's like a screen size sheet of
translucent Scotch tape. Just peel it off.

Rick

Effect of acid rain. Really. Had a Toyota Corolla once; the car's
glass was exactly the same. Came from LA area.
JR

On Mon, 26 May 2008 05:35:07 -0700 (PDT), waynard
wrote:

Hi,
this is a bit of an unusual problem. I recently bought a boat and it
came with a sonar unit that has a weird kind of mottling or splotchy
film of some kind on the screen. Almost looks like dried seawater
stains. It looks like you could almost scratch it off with something,
but of course, you risk damaging the plastic screen.
Any ideas what it is or how to remove it safely?

thanks.
HOME PAGE:
http://www.seanet.com/~jasonrnorth
--------------------------------------------------

On Mon, 26 May 2008 21:19:57 -0700, JR North
wrote:

Effect of acid rain. Really. Had a Toyota Corolla once; the car's
glass was exactly the same. Came from LA area.

Minor nitpick.
Actually acids do not attack glass. Alkaline solutions will. There are
lots of things in the rain besides the nitric and sulfuric acids, and
I am not saying it wasn't the rain, just that it wasn't an acid. The
acids are highly soluble and won't form a deposit on the surface.

Casady

WhatEv. Thanks Casady. 'Acid Rain' is a term, not a chemical definition.
JR


Richard Casady wrote:

On Mon, 26 May 2008 21:19:57 -0700, JR North
wrote:


Effect of acid rain. Really. Had a Toyota Corolla once; the car's
glass was exactly the same. Came from LA area.


Minor nitpick.
Actually acids do not attack glass. Alkaline solutions will. There are
lots of things in the rain besides the nitric and sulfuric acids, and
I am not saying it wasn't the rain, just that it wasn't an acid. The
acids are highly soluble and won't form a deposit on the surface.

Casady

--
--------------------------------------------------------------
Home Page: http://www.seanet.com/~jasonrnorth

"Richard Casady" wrote in message
.. .
On Mon, 26 May 2008 21:19:57 -0700, JR North
wrote:

Effect of acid rain. Really. Had a Toyota Corolla once; the car's
glass was exactly the same. Came from LA area.

Minor nitpick.
Actually acids do not attack glass. Alkaline solutions will. There are
lots of things in the rain besides the nitric and sulfuric acids, and
I am not saying it wasn't the rain, just that it wasn't an acid. The
acids are highly soluble and won't form a deposit on the surface.

Casady

Depends on the acid. Fluorine acid (hydofluuric acid) is what is used to
make frosted glass lightbulbs.

On May 27, 12:52*pm, (Richard Casady)
wrote:
On Mon, 26 May 2008 21:19:57 -0700, JR North

wrote:
Effect of acid rain. Really. *Had a Toyota Corolla once; the car's
glass was exactly the same. Came from LA area.

Minor nitpick.
Actually acids do not attack glass. Alkaline solutions will. There are
lots of things in the rain besides the nitric and sulfuric acids, and
I am not saying it wasn't the rain, just that it wasn't an acid. The
acids are highly soluble and won't form a deposit on the surface.

Casady

Another minor nitpick:
MOST acids will not attack glass. Hydroflouric acid will, and is used
to do just that!

On May 27, 4:31*pm, "Calif Bill" wrote:
"Richard Casady" wrote in message

.. .

On Mon, 26 May 2008 21:19:57 -0700, JR North
wrote:

Effect of acid rain. Really. *Had a Toyota Corolla once; the car's
glass was exactly the same. Came from LA area.

Minor nitpick.
Actually acids do not attack glass. Alkaline solutions will. There are
lots of things in the rain besides the nitric and sulfuric acids, and
I am not saying it wasn't the rain, just that it wasn't an acid. The
acids are highly soluble and won't form a deposit on the surface.

Casady

Depends on the acid. *Fluorine acid (hydofluuric acid) is what is used to
make frosted glass lightbulbs.

Sorry, didn't see your post before I replied the same answer!
How's the wife's shingles? Hope all is well.