28-05-2021, 01:44 PM
I used to have to fiddle a bit with LCD displays like that with some equipment I used to work with. If they got the minutest out of alignment there was often the problem of missing segments or even flashing ones. I am not sure about lighting. I always thought the white panel actually gave a background for contrast of the identified segments to be displayed. That is why LCD's were not ideal in many situations as they were always dark but more modern ones did have some form of illumination. The equipment I worked with also had a VFD display version too as well as various differences through the years so I cannot be certain of fine detail. I think I have a service manual somewhere but it won't say anymore than replace the unit as they never went as far as component / module repair. With regard to alignment I do remember it being critical and I only managed to fix one or two as the display was crimped together and the pressure needed to be even over the whole display. That was with simple, single line text displays.
Tracy
Tracy







