BenQ ST550K - Troubleshooting Common Issues; Picture and Sound Problems; Image and Control Panel Issues

Troubleshooting46
Troubleshooting
Problem Solution
No picture Check the following:
• Is the display turned on? Check the power indicator of the
display.
• Is the signal source device turned on? Turn on the device
and try again.
• Are there any loose cable connections? Make sure that all
cables are connected firmly.
• Have you chosen an unsupported output resolution on
the computer? Refer to Supported input signal resolution
on page 44 to select a supported resolution and try again.
• Have you chosen an unsupported output resolution on
the DVD or Blu-ray disc player? Refer to Supported input
signal resolution on page 44 to select a supported
resolution and try again.
No sound Check the following:
• Have you turned on the mute function on the display or
the input source device? Turn off the mute function or
increase the audio volume level and try again.
• Are there any loose cable connections? Make sure that all
cables are connected firmly.
The computer input
image looks strange.
• Have you chosen an unsupported output resolution on
the computer? Refer to Supported input signal resolution
on page 44 to select a supported resolution and try again.
• Use the Auto Tune function (See Picture menu on page
24) to let the display automatically optimize the display of
computer image.
• If the result of the Auto Tune function is not satisfactory,
use the Phase, Horizontal Position, and Vertical
Position functions to manually adjust the image.
The control panel
buttons do not work.
Have you locked the control panel buttons? Unlock the
buttons and try again.