Since I've been looking for answers as to why I've had two different LCD's that exhibit the same problem (horizontal squiggly lines when unit is wiggled or even the user's head is wiggled) I did some serious searching 'cuz I was receiving e-mails and PM's from this forum and others about what this really is.

 

Here's what I've found out...................... There are definitely two different problems.  One is still a problem today and the other seems to be an older problem that has since been remedied.

 

#1.)  Horizontal lines.  Although some referred to this as "ripple", I don't believe that this is the problem that some are talking about.   The horizontal lines are evident in the outer portions of the screen and and can be seen by either wiggling the unit or wiggling your head.  They remind me of what happens when you vacuum near a television set.

 

#2.)  Ripple effect.  This one seems to be a non-issue these days.  The true ripple effect is like "waves" (similar to when you push on the LCD panel with your finger).  My search results showed that folks had this prob in '03, but not much since.  Apparently some early 600m's had "ripple" effect (especially in the upper right corner) when the panel was moved and was probably due to the bezel/frame putting too much pressure on the LCD panel.  Again, not much an issue these days.

 

My 600m is now on its 3rd panel.  The first had a white spot in the lower middle but never exhibited the "horizontal lines".  Panel #2 and #3 *do* have the problem.  I believe this could be nailed down to a brand/model, but since I didn't disassemble and make note of all the LCD's that have been swapped out, I can't say.  I think Dell could nip this in the bud if they squared away which LCD's are the problem units.  (I believe it's a problem with the display's frequency but since LCD's are locked at 60hz, I don't know how it could be remedied)

 

I was helped by a "supervisor" today.....(don't know if that makes my level of help "better")....and he wants to try to fix the unit YET AGAIN, which will make this the 5th repair trip in the last 2 months.  I explained to him that I *do* like this 600m that I have, but Memphis NEEDS to identify the problem & DOUBLE-CHECK to make sure it's gone before sending it back to me.   Otherwise we'll just keep playing this game of tag 'til my 3 year warranty runs out. (Ridiculous).

 

Bottom line.......The Rapid Repair Depot needs to make sure a system is truly repaired before it leaves the depot, otherwise they're just wasting time and money!!!!!