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| Author | Powerbook screen issues: 1400 cs (Read 11217 times) | ||||||||||||||||||||||
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Mr_E
16 MB  Posts: 28 
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on: January 02, 2007, 23:18
I've had this issue for a while, but since I've recently started on the path to upgrading my 1400, I thought I'd see if anyone has dealt with, and hopefully solved, similar issues. My passive matrix screen has issues. It works, but sometimes there's a flicker to it, and sometimes I have to play with the brightness and contrast buttons to make the screen clear. And adjusting the angle of the screen can throw those settings out of whack. And sometimes the screen has vertical lines evenly spaced (about a centimeter, I think) that run about a third of the way down the screen from the top, but adjusting the angle can often make those lines go away. It may be that the screen is dying, but it's been doing that for a few years now. I just haven't been using the Powebook enough to worry about it. But since adjusting the angle seems to have an effect (and not just because of the way you have to look head-on at the passive-matrix screen), I'm thinking the screen itself may not be the problem, and I may have issues with the connection or with whatever video driver is in this thing. Has anyone seen/fixed this? I may have a 2nd screen on the way, if that's what it takes, but I'm hoping I can get my current screen working and use the 2nd screen, if it's any good, elsewhere. |
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dpaanlka
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1024 MB Posts: 1646
Reply #1 on: January 03, 2007, 02:48
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I have full lines in my 1400c. It is most likely the screen cable. I use my PowerBook Duo far more than my 1400c, so I never really tried to fix it.
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Mr_E
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16 MB Posts: 28
Reply #2 on: January 04, 2007, 14:30
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I think you're right. I opened up the Powerbook and took a look. I didn't go so far as to actually disconnect the screen and reconnect it, but I move the wires around, make sure they were seated properly, and put everything back together. After that the whole thing seems a lot better. There's still one angle where the screen goes crazy and is completely unviewable, but that's when the screen is about 30 degrees from being closed, so, while I'm not sure it should be doing that, it's certainly not interfering with regular use. I also had to reset the PRAM after messing with the screen wires. I don't know if that could affect anything, but if it could, then it's possible that the PRAM reset, and not my messing with the wires, is what improved the screen.
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senrew
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2 MB Posts: 2
Reply #3 on: March 23, 2007, 23:58
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I have the same problems with my 1400. It boots fine, but the screen will stay black. It gets that glow around the edges, so I know it's getting power. I'd have to play with the brightness and contrast settings, but eventually I'll (sometimes, maybe, hopefully after lots of prayer) get a screen full of vertical lines of off-color or off-palette mirror images of the desktop after logging in. Not sure exactly how better to describe it... Oh, and after three different floppy drives, I still can't get one to simply take a disc and work. All mac format disks it tells me it's not initialized and gives me the option box to format or eject. PC disks will mount on the desktop but when I double-click them, they are empty windows that show the size on disk correctly though.
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sierraredd
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128 MB Posts: 212
Reply #4 on: March 25, 2007, 03:16
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I've found it's always best to format any floppy before first use. They seem to have less issues. As for the 1400 screens most likely the problem is a loose cable or it's pinched. So your fix probably worked. Around 30 degrees closing is about when it starts to shut off for sleep mode. Replacing a screen out of the case is a pain. I've done one. Just be patient and take the time to make sure everything is correctly secured. Swapping them with the case on is easy. I picked up a 1400c 117 ( i have a 333 g3) for $15 plus shipping and swapped out the screens. Cheaper than new plus I got a spare adapter. Good Luck
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senrew
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2 MB Posts: 2
Reply #5 on: April 02, 2007, 02:45
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Well, I pulled the 1400 out of the back of the closet. I pulled it apart, gave it a good cleaning, even though it looked almost spotless inside. I made sure the video cables were tightly seated and then zapped the pram. Booted normally. Not sure if it's a perma-fix, but we'll see. Now I just have to fix my sylewriter 2200 and I'll have that 1996 roadwarrior setup I wanted back in high school.
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