alphatronics 386235, User Manual

Page: 74 / 80

74
TROUBLESHOOTING
Please use the following table to resolve the most common possible causes of the problem
before calling service personnel. A minor adjustment may eliminate the problem and restore
your TV reception.
Problem Solutions
No picture screen • Check that power is turned on.
• Adjust brightness and contrast.
• Check input signal of TFT-LCD/LED.
• Check the power connection to the unit
with screen.
• Check Main Display selection.
Picture is not clear • Check that Video cable is plugged in.
• Refer to the Picture Adjustments Menu in the
OPERATING INSTRUCTIONS.
Image is fuzzy • The power could be failing, try connecting the
unit to another power outlet.
• Move unit a way from the magnetic equipment,
such as Wireless Receiver, AC Transformer, etc.
• Refer to the Picture Adjustment Procedure
Menu in the OPERATING INSTRUCTIONS.
Colours are distorted Check that the Video cable is plugged in securely.
Screen bounces or has wavy
oscillations • Check Video input range (V-sync Max. 75Hz,
H-sync Max.48.08KHz)
• Make sure Video cable connections are secure.
No sound • Check speaker line connections.
• Sound might be muted, try adjusting
the volume.
Only one speaker operates • Check audio wire connections with
source device.
• Check the unit’s speaker wires are securely
connected.