FYI: Wet CRT.

[paulmd]

An eOne came into the shop this morning. Apparently it had been exposed
to the rain (not long, but long enough), and the CRT appeared dead. You
could only see a faint red glow on the very brightest of colors. I was
about to give up on it, when the reds started brightening, then the
blues started to appear, then the greens. Within 15 minutes it had
completely healed itself. The screen is now absolutely georgeous. What
gives, and should I be worried about long term damage?

 

[philo]

An eOne came into the shop this morning. Apparently it had been exposed
to the rain (not long, but long enough), and the CRT appeared dead. You
could only see a faint red glow on the very brightest of colors. I was
about to give up on it, when the reds started brightening, then the
blues started to appear, then the greens. Within 15 minutes it had
completely healed itself. The screen is now absolutely georgeous. What
gives, and should I be worried about long term damage?

Clean water will usually not damage electronic circuits if they are not
under power at the time .

Normally, it's best to let wet equipment dry out for 24 hours before
applying power.

 

[kony]

Clean water will usually not damage electronic circuits if they are not
under power at the time .

True, but is your rain really clean? Further, most monitors
these days have power live inside unless user had used a
power strip multi-outlet thingamajig to turn it off.

Normally, it's best to let wet equipment dry out for 24 hours before
applying power.

One of the problems with monitors may be the case design,
often the plastic has structural reinforcement partitions
(for lack of a better term) in the bottom panel that could
catch and pool water for quite a while. It's conceivable
that the monitor could dry out except for the pooled water
then if it were moved at less than perfectly horizontal
orientation, the pooled water might run. We can't assume
this happened but something must acccount for the initial
non-working state that then improved by itself... and we can
give Paul enough credit to assume he didn't first turn it on
while dripping wet still.

 

[paulmd]

True, but is your rain really clean? Further, most monitors
these days have power live inside unless user had used a
power strip multi-outlet thingamajig to turn it off.

In Eugene, It's cleaner than avearge.

One of the problems with monitors may be the case design,
often the plastic has structural reinforcement partitions
(for lack of a better term) in the bottom panel that could
catch and pool water for quite a while. It's conceivable
that the monitor could dry out except for the pooled water
then if it were moved at less than perfectly horizontal
orientation, the pooled water might run. We can't assume
this happened but something must acccount for the initial
non-working state that then improved by itself... and we can
give Paul enough credit to assume he didn't first turn it on
while dripping wet still.

It was dry when I started it.

 

[philo]

In Eugene, It's cleaner than avearge.

Nice city...I've been there many times...
it seems to rain almost every day...but just for a little while.
I have not been there in ten years or so...
I just love all the eccentric people there...
think I'd fit in well <G>!!!!!

Hope it's still kind of like it was ten years ago

 

[John McGaw]

An eOne came into the shop this morning. Apparently it had been exposed
to the rain (not long, but long enough), and the CRT appeared dead. You
could only see a faint red glow on the very brightest of colors. I was
about to give up on it, when the reds started brightening, then the
blues started to appear, then the greens. Within 15 minutes it had
completely healed itself. The screen is now absolutely georgeous. What
gives, and should I be worried about long term damage?

As long as _everything_ is given a chance to dry water should have no
deleterious effects on a monitor. A high-security military center where
I worked was equipped with hundreds (probably 300+) CRT monitors and all
were maintained in-house. We had a wash cabinet which was used to clean
monitors, basically by spraying with a detergent solution then brushing
any stubborn dirt and then rinsing well with demineralized water.
Monitors were then blown dry with compressed air and then moved into
another cabinet which blew heated (probably 140F) air around and through
the chassis for 12+ hours. In all the time I was there I never saw a
monitor harmed by the bath although some of them had oddities like
unsealed power transformers which had to be watched out for because they
would take much longer to dry if someone carelessly filled one with water.

I would not worry about permanent damage from a bit of rain although a
good drying before powering on probably would have been the wisest course.

 

[paulmd]

Nice city...I've been there many times...
it seems to rain almost every day...but just for a little while.
I have not been there in ten years or so...
I just love all the eccentric people there...
think I'd fit in well <G>!!!!!

Hope it's still kind of like it was ten years ago

 

[paulmd]

Nice city...I've been there many times...
it seems to rain almost every day...but just for a little while.
I have not been there in ten years or so...
I just love all the eccentric people there...
think I'd fit in well <G>!!!!!

I followed a VW minibus with 4 miniture American flags arrayed along
the back. It had a Rubber Skull there too. Multiple Grateful Dead
Stickers, anti-war stickers, large Grim Reaper decals on the sides. And
no one stared.

Hope it's still kind of like it was ten years ago

It's a lot bigger, more urbanized. But it's still Eugene,
not-burned-out-enough hippies and all.

 

[CBFalconer]

I followed a VW minibus with 4 miniture American flags arrayed
along the back. It had a Rubber Skull there too. Multiple Grateful
Dead Stickers, anti-war stickers, large Grim Reaper decals on the
sides. And no one stared.


It's a lot bigger, more urbanized. But it's still Eugene,
not-burned-out-enough hippies and all.

Back in the '80s there was a very fine hardware magazine published
from there. Then the publisher just decided to close down. Now I
forget the name.

--
Some informative links:
http://www.geocities.com/nnqweb/

http://www.caliburn.nl/topposting.html
http://www.netmeister.org/news/learn2quote.html

 

[philo]

I followed a VW minibus with 4 miniture American flags arrayed along
the back. It had a Rubber Skull there too. Multiple Grateful Dead
Stickers, anti-war stickers, large Grim Reaper decals on the sides. And
no one stared.




It's a lot bigger, more urbanized. But it's still Eugene,
not-burned-out-enough hippies and all.

Yep,.,.that;s Eugene allright...
probably the last remaining element of the 60's.

I used to live in Madison, WI but there is very little left from those good
old days !!!!