I have not had any success removing the LCD bezel so would not recommend that approach. It was hard for me to get the elastomer strip to re-conform on the PCB making things worse in the end. I tried it on two different LCDs so perhaps I need more practice :)
One trick that works for me is to put some de-oxit (or similar) on the elastomer and the use a thin piece of plastic or card to very gently massage the elastomer via the gap between the bezel and PCB. The screen can be powered to make it easier to see which lines are being impacted. Looking at the image I would say it looks like oxidation issues. Driver issues usually result in faint lines that vary in intensity with the contrast. At least in my experience. From: M100 <[email protected]> on behalf of Kevin Becker <[email protected]> Reply-To: <[email protected]> Date: Tuesday, March 3, 2020 at 6:58 AM To: "[email protected]" <[email protected]> Subject: [M100] LCD Lines > I've had a Model 102 for years that I enjoy tinkering with and I've often > thought I should pick up a Model 100 as well but never had a real need. Now > with new forthcoming REXCPM on the horizon I figured I might start watching > eBay looking for a deal. I ended up picking up a nice clean (on the outside > anyway) m100 that has some screen issues. There isna large horizontal band of > missing pixels all the way across the screen as well as some vertical lines > missing for about half the screen. > > https://imgur.com/JHnyrUB > <https://eur04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fimgur.com%2 > FJHnyrUB&data=02%7C01%7C%7C11f720b67c2245a08b6f08d7bf836522%7C84df9e7fe9f640af > b435aaaaaaaaaaaa%7C1%7C0%7C637188443363400945&sdata=fGJwDWec%2BdE%2BPiQcyZPrpx > kG83%2BxmG%2B57GOHpJto1gU%3D&reserved=0> > > I've seen the repair video linked below fixing similar issues. Squeezing the > bezel fixes part of the widest section of missing vertical lines near the > middle of the screen but leaves every other line missing still. No amount of > pressure anywhere around the bezel seemed to affect the missing horizontal > lines, nor the alternating section of missing lines. My question is, is there > anything else I should check before removing the LCD bezel and examining the > elastomer strips? The NiCad has just begun leaking but has not reached the > board. All but one of the smaller black electrolytic caps have leaked quite a > bit though. Is there any way that damaged traces on the main PCB would > produce the issues on the LCD? > > https://imgur.com/JHnyrUB > <https://eur04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fimgur.com%2 > FJHnyrUB&data=02%7C01%7C%7C11f720b67c2245a08b6f08d7bf836522%7C84df9e7fe9f640af > b435aaaaaaaaaaaa%7C1%7C0%7C637188443363410949&sdata=zhTvH8SfeTH9Jgu2FFZFougRul > AffDcHxO6%2BFn%2B7V2Q%3D&reserved=0> > https://www.youtube.com/watch?v=bYa-zT75N9s > <https://eur04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.youtube > .com%2Fwatch%3Fv%3DbYa-zT75N9s&data=02%7C01%7C%7C11f720b67c2245a08b6f08d7bf836 > 522%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637188443363410949&sdata=ZGNJ > %2BckPwnPSbkxjksD7JyFfdQbHmr5IX654qjCxqCU%3D&reserved=0>
