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Portable display lines
Posted by: gijsmans on 2020-08-25 18:53:25 Did the recap. Everything works great. But the display has some lines. Like before the recap. Can it be solved? Checked the forum but could not find an answer.
Posted by: techknight on 2020-08-27 03:30:55 Nope. Bad screen, youll need to find another one. This is starting to become a bit more common lately. You may be able to seperate the panel from the PCB, and clean the Zebra strips, but I fear that might make it worse.
Posted by: LaPorta on 2020-08-27 03:42:39 Just for future sake...is it possible to ever repair these? Someday we are going to run out of Portable displays...
Posted by: gijsmans on 2020-08-27 03:52:30 Nope. Bad screen, youll need to find another one. This is starting to become a bit more common lately. You may be able to seperate the panel from the PCB, and clean the Zebra strips, but I fear that might make it worse. Thanks for the advise. Better not touch it. Tempting though.
Posted by: gijsmans on 2020-08-27 03:55:16 Just for future sake...is it possible to ever repair these? Someday we are going to run out of Portable displays... For sure many of us will meet the day when the last Portable dies. But we’ll live.
Posted by: techknight on 2020-08-27 04:11:10 Just for future sake...is it possible to ever repair these? Someday we are going to run out of Portable displays... since the fault is within the active matrix of the glass panel itself, highly unlikely. We would have better luck adapting an FPGA to the timing signals coming from the portable, and buffering the image and re-displaying it on a more modern LCD.
Posted by: LaPorta on 2020-08-27 04:44:58 I'd love to make an adapter for that port.
Posted by: pbertolo on 2021-01-10 02:56:42 You may be able to seperate the panel from the PCB, and clean the Zebra strips, but I fear that might make it worse. I tried on a spare, defective (“lines”) panel I had. No effect. Putting the whole thing back together is almost impossible, alignment and pressure level adjustment are factory level job. Moreover, no benefit in regard to the dead lines, so I would conclude they are consequence of failures in the active matrix panel. In a nutshell, just don’t do it. Anyhow, the whole thing with the displays developing “dead lines” is indeed concerning for the preservation of these odd but beautiful machines. I have three panels (non backlit), two of them developed these dead lines all of a sudden, starting from a perfect condition and after some hours of use following a long time storage. One unit is still perfect, bar for a single dead pixel. I’ve noticed it’s by chance an early unit, the cover lid featuring the two visible screws just underneath the slot of the retracted handle. Without going paranoid on this, I would definitely be supportive if someone had the skills for developing and sourcing alternative solutions based on modern components.
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