HP VH240a User Manual

Solving common problems 15
3 Support and troubleshooting
Solving common problems
The following table lists possible problems, the possible cause of each problem, and the recommended
solutions.
Problem Possible Cause Solution
Screen is blank or
video is flashing.
Power cord is disconnected. Connect the power cord.
Monitor is off. Press the back bezel power button.
NOTE: If pressing the power button has no
effect, press and hold the Power button for 10
seconds to disable the Power Button Lockout
feature.
Video cable is improperly
connected.
Connect the video cable properly. See
Connecting the cables on page 4 for more
information.
System is in sleep mode. Press any key on the keyboard or move the
mouse to exit sleep mode.
Video card is incompatible. Open the OSD menu and select the Input
Control menu. Set Auto-Switch Input to Off
and manually select the input.
Image appears
blurred, indistinct, or
too dark.
Brightness is too low. Open the OSD menu and select Brightness to
adjust the brightness scale as needed.
Input Signal Not
Found is displayed
on screen.
Monitor video cable is
disconnected.
Connect the appropriate video cable between
the computer and monitor. Be sure that the
computer power is off while you connect the
video cable.
Input Signal Out of
Range is displayed
on screen.
Video resolution and/or
refresh rate are set higher
than what the monitor
supports.
Change the settings to a supported setting. See
Preset display resolutions on page 21 for more
information.
The monitor is off
but it did not seem
to enter into sleep
mode.
The monitor’s power saving
control is disabled.
Open the OSD menu and select Power Control >
Auto-Sleep Mode and set auto-sleep to On.
OSD Lockout is
displayed.
The monitor’s OSD Lockout
function is enabled.
Press and hold the Menu button on the monitor
for 10 seconds to disable the OSD Lockout
function.
Power Button
Lockout is displayed.
The monitor’s Power Button
Lockout feature is enabled.
Press and hold the power button for 10 seconds
to disable the Power Button Lockout feature.

HP VH240a Specifications

General

3D	No
Pixel pitch	0.274 x 0.274 mm
Screen shape	Flat
Display diagonal	23.8 \
Display technology	LED
Native aspect ratio	16:9
Viewable size, vertical	296.4 mm
Contrast ratio (dynamic)	5000000:1
Contrast ratio (typical)	1000:1
Display number of colors	16.78 million colors
Viewable size, horizontal	527 mm
Display brightness (typical)	250 cd/m²
Supported graphics resolutions	640 x 480 (VGA), 720 x 400, 800 x 600 (SVGA), 1024 x 768 (XGA), 1280 x 1024 (SXGA), 1280 x 720 (HD 720), 1280 x 800 (WXGA), 1440 x 900 (WXGA+), 1600 x 900, 1680 x 1050 (WSXGA+)
On/off switch	Yes
Pivot angle	0 - 90 °
Tilt angle range	-5 - 30 °
Panel mounting interface	100 x 100 mm
Product color	Black
Country of origin	China
Market positioning	-
Sustainability certificates	EPEAT Silver, ENERGY STAR
AC input voltage	100 - 240 V
Power consumption (off)	0.3 W
Annual energy consumption	28 kWh
Power consumption (standby)	0.5 W
Power consumption (typical)	19 W
RMS rated power	4 W
Number of speakers	2

Weight and Dimensions

Depth (with stand)	218 mm
Width (with stand)	539 mm
Height (with stand)	499 mm
Depth (without stand)	46 mm
Height (without stand)	323 mm
Weight (without stand)	4660 g