On 8/3/2010 9:42 PM, glen wrote:
The Dell started having a problem with the screen image rolling down (or up
depending on your reference). Sort of like the very old CRT TV's that needed the
horizontal hold adjusted. I'm talking about 1950's or 60's TV's. Don't know if
you are old enough to know what I am talking about.
Once the Dell warmed up the problem went away. It got worse last Winter when
the room temp was 50-60 F. The rolling was so fast it just a series of thin
lines -- no image. Once the monitor warmed up, all was OK. The work around was
to set the auto wakeup time for an hour or two before I needed to use the G4 DA
the Dell was attached to.
Recently the rolling started an hour or two after the monitor warmed up and was
stable. This made for a difficult if not impossible to be useful in a work
environment -- soooo time for a new monitor.
The new monitor is definitely sharper than aged Dell -- but if a cheap repair is
possible I would be willing to give it a try. I could find a very productive
use for the old Dell. Thanks for the info --glen
LCD monitors are inherently digital devices. If something is rolling
like that on an LCD, I would suspect bad capacitors as being a possible
cause. The rolling effect could be caused from the refresh. If the
rolling gets worse or better when you adjust your refresh, that could be
as cheap as a buck in parts to fix, depending on how many caps are dying
it could be more, but they are cheap. We had one that exhibited that
symptom. Don't know if that is the problem with yours but if you feel
comfortable opening up the back and looking at the boards it will be
easy to tell usually. However a cap can look perfect and still be bad.
As for the old tvs, im 32. I remember the older tvs. Bought one from a
thrift store that did that, had to repair it, horizontal video board had
a bad component on it. =)
--
You received this message because you are a member of G-Group, a group for
those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs.
The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette
guide is at http://www.lowendmac.com/lists/netiquette.shtml
To post to this group, send email to [email protected]
For more options, visit this group at http://groups.google.com/group/g3-5-list
