waves on extended desktop, and when only using CRT monitor

[The Shadow]

I have a new Toshiba Satellite 210. When I use the LCD+CRT extended desktop
mode, or just use the CRT monitor (Samsung - SyncMaster 17GLi) I get waves
that move down the screen. It makes my display look like a flag. When I only
use the CRT - in that mode the waves move faster. The actual display on the
screen moves and the display gets darker in areas, giving it a distance
effect. This really gets annoying, any help would be greatly appreciated.
Thank you in advance.

 

[Dwarf]

Hi,

Have you got another PC that you can try the monitor on? If so, does the
problem disappear? If it does, then you need to look at the settings on the
other machine (the one you are having problems with). Have you set the
refresh rate too low? Set all settings to the values recommended by the
monitor manufacturer. If none of this helps, or if there is no difference
when the monitor is connected to an alternative PC, then it looks as though
the monitor has an internal fault in which case you are looking at obtaining
a replacement. Before condemning it altogether, check the video cable. If it
is the type that plugs into the monitor as opposed to being wired in, try
another cable as some faults are caused by faulty cables.
Dwarf

 

[The Shadow]

Thanks Dwarf, I was mostly worried about my new laptop being at fault. The
monitor has worked great for a number of years with another computer, but it
did take a fall at one point so I would not be too suprised if the screen is
causing the problem. the strange thing is that it waves at a faster speed
when it is used as my only monitor. There is only one refresh rate that it is
allowing me to use, so I would think that it is the right one. Just to make
sure because I am still covered by a warranty. Are you pretty confident that
the problem is not the computer? I will try the extended desktop with another
monitor, and get reply later. Thanks again for your assistence.
The Shadow

 

[Dwarf]

Hi,

Thanks for the reply.
From what you say, it is perfectly possible that your monitor is faulty,
especially as "it did take a fall at one point". Although monitors are fairly
sturdy items, it certainly does them no good whatsoever if they suffer
accidental damage, e.g. if they are dropped. This can cause internal damage
to the tube itself, particularly to the shadow mask/grid supports. It can
also cause the electron gun to become misaligned.
When purchasing a new monitor as a replacement, be sure to check that it has
a standard VGA connector available as most, if not all, laptops only support
this standard.
Dwarf