Hi Shaun try putting it back in the broken back panel just to check and,
if it still stays dark the there might be moisture in the circuit boards, place them on a piece of kitchen towel and then put them in a warm place for around 1 day also if you can lay a cilica bag just under the edge of the screen, The warmth of the room or cupboard that you put it in should draw the moisture from the screen to the top and the silica bag or kitchen towel should soak it up. then try again.
If when you put it in the broken case it lights up then there is something missing when you put it in the new case so re-step every part of the transplant.
vicki On 8 Oct 2005, at 01:15, Shaun Reynolds wrote:
Hi all, I've just bought the back panel for a PowerBook 540c. The hinges no longer attached to the back of the old plastic panel. After swapping out the LCD and the two circuit boards and placing them in the new back panel, the LCD stays dark. The backlight comes on, but the display stays blank. All the ribbon cables are in tightly, I can't imagine what could have gone wrong; the display worked perfectly before. Ironically, I also replaced the back panel of a PowerBook 170 and the display works perfectly. Also ironic, the 170's display was so full of grime and dirt that I figured if anything, that display would have been the one to fail. I did clean both LCDs with a Read Right CRT cleaning pad. The displays were both cleaned to the metal frame, maybe this did the 540c's display in? Thanks for any input, -Shaun
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