Hello

I have a 17 inch flat surface CRT monitor which I want to test when it
is powered and with the screen face down on a towel. Can it damage the
CRT tube in this way or do I have to test in a normal way, setting the
monitor horizontal.
Thx

Bever

"Tamme Bever" wrote in message
oups.com...
Hello

I have a 17 inch flat surface CRT monitor which I want to test when it
is powered and with the screen face down on a towel. Can it damage the
CRT tube in this way or do I have to test in a normal way, setting the
monitor horizontal.

No problem ... test away!

"Tamme Bever" wrote in message
oups.com...

I have a 17 inch flat surface CRT monitor which I want to test when it
is powered and with the screen face down on a towel. Can it damage the
CRT tube in this way or do I have to test in a normal way, setting the
monitor horizontal.

Can't see a problem.

Tamme Bever wrote:

Hello

I have a 17 inch flat surface CRT monitor which I want to test when it
is powered and with the screen face down on a towel. Can it damage the
CRT tube in this way or do I have to test in a normal way, setting the
monitor horizontal.
Thx

Bever

In the 1930s CRTs were operated screen up, with a mirror lid used to
view the picture. Today CRTs can be used in any and all positions.


NT

Your monitor can run in any position for testing.

Just take care to not knock the neck of the tube, or hit the monitor.
It is possible for any small debris, or carbon pieces to fall on to the
mask in the tube, and afterwards show in the picture. I've seen this
happen.


Jerry G.


Tamme Bever wrote:
Hello

I have a 17 inch flat surface CRT monitor which I want to test when it
is powered and with the screen face down on a towel. Can it damage the
CRT tube in this way or do I have to test in a normal way, setting the
monitor horizontal.
Thx

Bever

wrote:
Tamme Bever wrote:


Hello

I have a 17 inch flat surface CRT monitor which I want to test when it
is powered and with the screen face down on a towel. Can it damage the
CRT tube in this way or do I have to test in a normal way, setting the
monitor horizontal.
Thx

Bever


In the 1930s CRTs were operated screen up, with a mirror lid used to
view the picture. Today CRTs can be used in any and all positions.


NT



They could then too, the old electrostatic deflection tubes were so long
they mounted them vertical with the mirror so the set wouldn't be so deep.

Jerry G is right on, don't do anything to the CRT tube that would cause
any loose debris within the CRT to fall onto the shadow mask and cause
a black spot by blocking the electron beam, or to go around the edge of
the mask and scratch the phosphors themselves. The phosphors are
coated on the electron gun side, but the material is easily disturbed
and anything loose in the tube could scratch the phosphors.

H. R.(Bob) Hofmann

Jerry G. wrote:
Your monitor can run in any position for testing.

Just take care to not knock the neck of the tube, or hit the monitor.
It is possible for any small debris, or carbon pieces to fall on to the
mask in the tube, and afterwards show in the picture. I've seen this
happen.


Jerry G.


Tamme Bever wrote:
Hello

I have a 17 inch flat surface CRT monitor which I want to test when it
is powered and with the screen face down on a towel. Can it damage the
CRT tube in this way or do I have to test in a normal way, setting the
monitor horizontal.
Thx

Bever