Hi guys, i've been looking around at several forums, not just this one to see if there is a solution for the dim / dark screen issue which seems to plague dell inspiron 1545, 1537, etc. I have seen people change motherboards and say it's fixed, and some simply refit the video cable to fix, but i now have 3 of these on my workbench and all have the same problem. i have fitted new cables, new inverters, even a supposedly working motherboard to no avail. I even borrowed a working 1545 laptop and tried the cable, screen and inverter from a broken one just to isolate the problem and they didn't work on it. The real pain is that the original working components didn't work now either. 
Now i've got 2 customers machines and a friends machine all with dim screens.
Anybody got any real answers to this issue, are there any Dell engineers out there that must have faced this issue? Need a definate solution before i throw more money at the problem.
Regards
John