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Also, finding out why they may fail and/or what's wrong with them may be a bit pointless, unless there is some preventative step you can take for those few that haven't failed. I think there are two paths forward for working LCDs, esp since baking them is a hit-or-miss proposition, i.e. some...

I doubt the people that designed and created those LCD panels are still at the company considering it's 30+ years old. I'm sure if you contacted the company, even if language wasn't a barrier, they wouldn't be able to help. Plus, if it was a design flaw, I'm sure they wouldn't want to admit to...

Oh, good to know. Yes, the hinge exploded on mine on one side. It got stuck on a wooden platform (I think I had it sitting on a piece of plywood) when I tried to open it up. So important to always lift the laptop if you open up the panel. I did 3D print a fix for the missing tab and it seems to...

No, I tried to see if I could have tunneling return after baking it, so I wanted to add more moisture to the air than was normal (thus a humidifier). We had just gotten a new washer and dryer so I used one of those very large boxes, though I cut out a side for air and placed it close to a wall...

Oh that's too bad. I have a ThinkPad 365XD and so far it's held out great. Don't know who made its display as I haven't taken it apart as of yet. It's a lovely machine from 1995/96 running Windows 98 presently.

The moisture theory has problems. Uniformity of the tunnel vision, i.e. if moisture gets in, why does it appear as a lens both from top, sides, and bottom...and what about gravity's effect and how water tends to seep in more randomly, even in small amounts of moisture. Also, the fact that it...

I've gotten a few inquiries about how my "100 degree celsius bake to fix tunnel vision" on my PB 180 has held up after a year. It's been about 18 months now and no ill effects or return of the issue. I just had it on for about 4 hours with the screen looking normal. I don't use my PB180 on a...

Trying my best to squash the "old wives tale" of it being moisture. Unfortunately this thread has become more than just about Tunnel Vision as people are posting about other fixes, but early on we had a robust discussion. I've since reached out to someone that's played with creating their own...

If you watch the second video, the liquid crystal appears very miscible...if moisture is involved it would mix in with that and not stay separate. The seal re-flow in my opinion is about the temperature needed to get the sealant viscous again and it depends on what state it is in. The issue is...

Yup...it's hard to find, but there's a link on Archive.org. It's shameful how simple a hack it is. https://web.archive.org/web/20050422004026/http://homepage.mac.com/inachan/mac/pb150/adb/test-e.html

Yeah, it's a bit unnerving to remove the LCD panel and seeing those fine contacts, but it does seem to get put back together. There is a little bit of wiggle room so you don't have to align it 100% (that's the part I worried about since the + symbols did not align for me). The one concern I have...

If you disassemble the panel from the LCD board (it's actually pretty easy) and put it in an oven at 100 celcius for 4 to 5 hours, it should fix it for you. My PB180 would start darkening after a few minutes and after baking it i's now been 8+ months it has not returned. There are some cool...

I don't agree with that. I've had good luck now with my screen as it's worked for 6 months after baking. If it's moisture related and not due to re-flowing the seal adhesives, then if I put a humidifier next to it for a prolonged period of time and would run it regularly, I would suspect in a...

I personally do like keeping things original where possible, but when your screen gets as far gone as I've seen them go (even Powerbook2736) it's either not usable or you find another PB and grab its screen -- in which case you now have one without a screen. So I see scenarios where doing what...

Well, I just heard anecdotally that someone had argued the thing to do is use the vacuum method to remove (and thus prove its) moisture. My counter argument was that that type of vacuum sealing could apply enough pressure to suck the panels together as well and so it wouldn't necessarily prove...

I wish someone would design new displays. I think there should be enough PowerBook users out there to make it worthwhile. They are such nice machines after all. A TRS-80 Pocket Computer enthusiast made replacements for both the TRS-80 Pocket Computer 1 and 3 and you can buy them for only $20...

Or perhaps a humidity test would help. Bake a screen to fix it, then put it next to a humidifier and see if it comes back. That would be additional observational data. Then if it comes back you can simply re-bake it to get rid of it. For those that think it's humidity, it should be an easy and...

I first tried that approach for a year and it had no impact. The LCD behavior doesn't really follow moisture, both pre and post baking. I think moisture success stories are too anecdotal to be useful.

Thanks for sharing your experience. I've scanned through the long thread but haven't carefully read everything. When you baked it, how sure were you that you oven kept a constant 212'ish temp and that it was accurate? I put two pizza stones in a gas oven and had an accurately calibrated...

I can see that with motherboards, esp since they can have lead solder. I think the LCD panel is pretty clean having a metal housing and glass plating.