[ltp] Strange LCD issue

[Henrique de Moraes Holschuh]

On Sun, 30 Dec 2007, Pablo Vera wrote:
> I am having the same issue with a T30, behavior is similar as the one 
> described by Jim, heat and position affect the flickering and it is getting 
> worst.  I was thinking that maybe the screen connector is loose or has a 
> false contact, that is affected by heat.  I will download the hardware 
> manual from IBM and see if I can clean and reset the screen connector.  
> I'll report back what I find.

AFAIK the two more probable causes for this kind of problem are:

1. Loose connectors or cabling with micro-fractures (to fix: tighten cables
   / replace cable or connector)

2. Cold solders, especially below BGA (ball-grid-array) chips like the GPU
   (to fix: reflow the solder, requires help from a good electronics shop)

3. circuit board micro-fracturers (can be fixed with soldering or patch
   cables depending on your luck, but finding it is extremely non-trivial.
   Usually one just replaces the entire board).

I believe (2) is a common problem on at least the T40, so it could very well
be what plagues the T30 and T41...

Look in thinkwiki.org...

-- 
  "One disk to rule them all, One disk to find them. One disk to bring
  them all and in the darkness grind them. In the Land of Redmond
  where the shadows lie." -- The Silicon Valley Tarot
  Henrique Holschuh