Vertical lines on flat CRT monitor

  • Thread starter Thread starter Grunff
  • Start date Start date
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Grunff

Hi,

I have a new Philips Brilliance 109P, which is a 19" flat CRT. It's been
running just over 24 hours, and in that time has developed a series of
vertical streaks made up of fine lines.

I've never come across this before, but I'm guessing what I'm seeing is
a shadow of the aperture grille. Is that correct? If so, is there
anything I can do about this, or does it have to go back?

TIA
 
Grunff said:
I have a new Philips Brilliance 109P, which is a 19" flat CRT. It's been
running just over 24 hours, and in that time has developed a series of
vertical streaks made up of fine lines.

I've never come across this before, but I'm guessing what I'm seeing is
a shadow of the aperture grille. Is that correct? If so, is there
anything I can do about this, or does it have to go back?
Click to expand...


I thought I'd reply in case anyone else comes across the same problem.
Having found nothing about this on a long google, I decided to see if a
good whack would fix it. It did (4 whacks were in fact required).

It appears that the aperture grille wires had moved a little, and
whacking the monitor moved them back.
 
Grunff said:
I thought I'd reply in case anyone else comes across the same problem.
Having found nothing about this on a long google, I decided to see if a
good whack would fix it. It did (4 whacks were in fact required).

It appears that the aperture grille wires had moved a little, and
whacking the monitor moved them back.
Click to expand...

Ah...yes.......the good old mechanical adjustment when all else fails.

Hmmm..........even though the.......uh.....ah.......adjustment
worked.....this time, I would consider exchanging it. I say this because I
wouldn't expect what you saw out of a monitor as new as yours.

Good luck.


--
callsignviper


The truth is out there. You just have to look in the right places and ask
the right questions.
 
callsignviper said:
Hmmm..........even though the.......uh.....ah.......adjustment
worked.....this time, I would consider exchanging it. I say this because I
wouldn't expect what you saw out of a monitor as new as yours.
Click to expand...

No, I wouldn't expect it either, but I'm willing to put it down to
thermal settling if it doesn't do it again.

It's brand new with a year's warranty, so if it does it again it'll go
right back.
 
I have a new Philips Brilliance 109P, which is a 19" flat CRT. It's been
running just over 24 hours, and in that time has developed a series of
vertical streaks made up of fine lines.

I've never come across this before, but I'm guessing what I'm seeing is
a shadow of the aperture grille. Is that correct? If so, is there
anything I can do about this, or does it have to go back?
Click to expand...

Does it have a trinitron or diamondtron CRT-tube? If it does, those 2 lines
are there to keep the grill in place. All *tron tubes have them (they use
aperture grill).

Checked the specs, your monitor has aperture grill, and those 2 lines belong
there. The price to pay for better quality picture.
 
tadaa said:
Does it have a trinitron or diamondtron CRT-tube?
Yes.


If it does, those 2 lines
are there to keep the grill in place.
Click to expand...

Please see my post - *vertical* lines. I know about the damper wires.
That isn't what I was referring to.
 
Please see my post - *vertical* lines. I know about the damper wires.
That isn't what I was referring to.
Click to expand...

So are these lines rapidly pulsating, almost like interlaced lines
from a TV signal? I've got a 19" flatscreen (P900?) Trinitron that
does that intermittently, appears to be a fault with the monitor as it
will be fine for a time, then start doing that, and if the monitor is
powered off then back on immediately the lines disappear, at least for
a while. From about 6' away the lines aren't even visable, but up
close or with light colored background they are. The damper wires
continue to provide a very clear outline, it doesn't appear to be
damper wire related.

I too should probably have it replaced, but it's always been pretty
low on my list of priorities as it's not my primary-use monitor. At
one point I was thinking it had something to do with the cable
routing, near a surge strip with transformers plugged into it, but
since power cycling the monitor temporarily resolves it that doesn't
appear to be the case.
 
Does it have a trinitron or diamondtron CRT-tube?
Yes.



Please see my post - *vertical* lines. I know about the damper wires.
That isn't what I was referring to.
Click to expand...

Oh, didn't notice it. The question about those horizontal lines is so common
that I somehow read it as 'horizontal' :)
 
So are these lines rapidly pulsating, almost like interlaced lines
from a TV signal? I've got a 19" flatscreen (P900?) Trinitron that
does that intermittently,
Click to expand...

<snip>

Oops. I too misread the post and assumed horizontal lines, which is
what I saw on my Trinitron, not vertical.
 
kony said:
Oops. I too misread the post and assumed horizontal lines, which is
what I saw on my Trinitron, not vertical.
Click to expand...

I know the horizontal line question comes up often.

The lines are gone now (as per my reply to my original post), but they
were a little like the damper wire lines, but dozens of them, and
vertical. The aperture grille wires in fact.
 
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