>I just replaced the PRAM battery on my PB540c, but I must have
>done something wrong as I now have a non-functional powerbook.
>
>The upgrade seemed to go well (no extra pieces after the job!).
>
>I reset the power manager before plugging the AC adapter back in
>for the first time.
>
>It boots, but with no startup chime. I can hear the powerbook starting up
>until it (probably) gets to the desktop. The thing is, the screen is all
>black.
>I get zero video.
>
It might be worth a try to turn the brightness up. I learned this the hard
way when my wife claimed her PowerBook 190cs was dead; luckily I had
installed the video adapter a couple of weeks before and managed to hook it
up to a 14" Hi-Res, where it performed flawlessly. She had moved the 'book,
inadvertantly putting a finger on the "down" side of the brightness key,
switching it all down!
>I tried reaching the "about this mac box blindly", but I don't seem to
>be "catching it".
>Other attempts to click on stuff were in vain.
>
>I'm ready to open it up again, but I don't see what I could look for or
>try.
Try to reseat the video ribbon cable, if the above proposal doesn't help.
>Anyone with a guess?
>
>BTW: I don't have an external monitor to try it on.
Maybe you thought of the right thing...
Good luck, OM
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