Yeah, that could use some attention. Cleaning with solder wick and ipa, too.
On Sun, Jul 8, 2018, 11:42 AM Gregory McGill <[email protected]> wrote: > https://photos.app.goo.gl/R7p1wJ7kvVEgmELMA some gunk by the corner there > > On Jul 8, 2018 6:35 AM, "Jeffrey Birt" <[email protected]> wrote: > > The fact that the whole screen clears shows that the LCD is being reset, > i.e. all LCD driver chips are getting reset and clearing each pixel, the > default power on state of each pixel is black. So, this should mean that > the LCD itself is OK, as it can go to both black and clear. A ‘RESET’ goes > to each chip and this line is toggled as part of the start up sequence. > > > > I have not looked at the M200 schematic but I’m assuming it uses the > Hitachi type LCD drivers like the M100/102 does. I seem to recall these > take a command word, like to set the ‘cursor’/write position and then the > data to write. Since half of the screen is working properly the data lines > are getting there OK as are any shared chip select and R/W signals. Any > chip select from the main board that is unique to each driver would be > suspect as well as any traces/logic on the LCD board to the affected areas. > > > > I’m not sure that helps, it will be a case of tracking down signals I’m > afraid. > > > > Jeff > > > > *From:* M100 <[email protected]> *On Behalf Of *Gregory > McGill > *Sent:* Saturday, July 7, 2018 2:40 PM > *To:* [email protected] > *Subject:* Re: [M100] model 200 arrived.. > > > > the position seems the same but they come and go with different screen > data, a clear screen shows no bars.. the menu shows some, a basic listing > shows more and it changes as lines scroll > > > > Greg > > > > On Sat, Jul 7, 2018 at 10:42 AM Jeffrey Birt <[email protected]> > wrote: > > Are you saying the position of the black bars change? > > > > >
