Tandy 1400FD Video
The Tandy 1400FD has a built-in flip-up 80x25 LCD screen providing IBM CGA emulation. The computer also has an external 9-pin D-Sub monitor port for an RGB color monitor.
LCD Screen
The backlit LCD 'grey scale' screen is adjusted, dependent on light conditions, by a combination of angling the screen and adjusting the contrast dial on the right side of the computer.
The user manual noted, To assure a clear image, your work area must have adequate lighting.
The manual also noted that operating or storing the system in high temperatures or high-humidity for long periods would shortens the life of the display backlight.
No Display
Should there be no display on the LCD screen, it is likely that either the backlight has failed or that the PSU has no -22V output:
- Since the display panel is a sealed unit, replacement of the screen will require sourcing a complete Toshiba TLX-1342-G381 panel
- Bad electrolytic capacitors in the PSU can cause the -22V line to drop.
Switching Between Display Devices
- Press <CTRL><ALT><F12> to switch to the LCD
- Press <CTRL><ALT><F11> to switch to an external monitor
The display can also be selected via the setup utility.