Hi. My old Toshiba Tecra 8100 laptop has developed this fault with one
whitish thin green line running vertically from top to bottom of screen on
the right hand side near to the middle of the LCD Screen and I am trying to
fathom out if this fault is to do with the LCD Screen itself or the Inverter
module so I know what to replace.
I have already replace the laptop main board (due to a different fault) but
the laptop screen still has this vertical line there. So its not the
graphics chip at fault on the main board and also when I plug an external
monitor into the VGA port the line doesn't appear on the external monitor.
Definitely not the inverter. The screen looks even enough & not
flickering on the video, so the inverter & cold cathode tubes as well as
any dimmer control connected to them are almost certainly OK.
Must be either Inverter or LCD Panel but which one????
A video of the fault I have uploaded here on youtube so you can see
whereabouts it is and how the line looks like:
http://ie.youtube.com/watch?v=xtqPjSBZDiI or http://tinyurl.com/2nqho9
Thanks for any helpful advice.
It *could* be the LCD (Specifically the chip that deals with the LCD
column drive ) or ( *Much* more likely IME on old laptops) the multiway
cable or connector connecting the LCD to the main board. If the cable,
you may be able to make the fault come & go by flexing the lid gently to
& fro with the unit operating. If the fault has appeared since you
changed the mainboard, it's very likely that either the connection isn't
fully seated or the cable is damaged.
If you can make a DOS boot floppy, you can run the Toshiba DOS
diagnostics for your machine which you can get off the Toshiba Canada
website ( www.toshiba.ca ) by navigating to support, then selecting your
model number & following the links. Usually, it's a self extracting
archive, that will install DOS and the utilities onto a blank floppy
disc. This removes Windows & all its drivers from the picture, & lets
you confirm it's a hardware fault.
Hope this helps.
Tciao for Now!