screen still dim after new inverter cable AND inverter board
Apple MacBook "Core 2 Duo" 2.1GHz 13" White A1181
A few weeks ago the screen went dim on my MacBook. Could see the desktop, and shining a bright light onto it makes it evident it's still fully functional other than the screen. The screen still lit itself up sometimes, usually just for a few seconds.
So I bought an inverter cable. Disassembled the macbook by the instructions here at iFixit (such a very useful resource!). But it was worse. I could still light up the screen by shining a bright light ONTO IT. But it didn't have those few moments now and again where it lit itself up, except when I lowered the brightness to 0 and then STARTED to raise it again, there'd be a brief flash of illumination.
So I bought an inverter board. This brought it back to the former state, where the screen is dim but lights up only sometimes.
I took it to Microcenter, bought a VGA adaptor cable and asked the repair person there if he wouldn't let me hook it up to a screen just momentarily so I could see if my motherboard was the problem.
We hooked it up, and the macbook plus his monitor made a 2-screen setup. I saw my Dock and some icons on his screen, and I saw a second desktop on my macbook's screen. No dimness at all! He said "I'm not seeing a problem here." I said "I know! How disappointing!" Heh. So we figured "Must be cured."
But it was just like when you go to a doctor for some chronic pain, and while you're there the pain's gone and he doesn't see what your complaint is.
As soon as I got the MacBook home, it was back to a dim screen. I can make it illuminate sometimes by just slamming the top shut and opening it. Or by dickering with the brightness control.
I don't know what else it is. Maybe the inverter board had the same problem as the old?
Why did it light up with no issues for several minutes while connected to an external monitor? Maybe because I'd been driving about in the cold and something that was loose "jiggled" for those few minutes into place, and then jiggled loose again when I drove the computer home?
I'm thinking of buying the whole top unit, LCD and frame and all, with the inverter board and inverter cables AND THE OTHER CABLES in it. I'm thinking there's still some cable issue.
Any and all advice is welcome! Thank you!