Trouble Shooting - Hisense HAIO138 User Manual

Trouble Shooting

Before preparing for repair, check according to the table below to see if you can find the cause of the problem.
If you strictly follow the instructions but still can't resolve the problem, you can turn to professional servicemen for
help.
Problem
No sound or picture
Sound and picture
are disturbed
The screen cannot be
powered on or the power
indicator light is off.
The unit turns off
unexpectedly.
Remote Control is
not working.
There is no sound
when the HDMI in
channel is used.
The internal PC has
no signal.
LED AII-IN -ONE Maintenance
•
The maintenance of LED display system mainly includes the maintenance of LED display system, communication
system and power system.
Precautions for LED display screen
Small pitch LED display screens are high-precision, high-density electronic products, which belongs to
precision protection products category. It needs special protections in daily use such as protections from static
electricity, dust, moisture and physical impact.
1. Static electricity
LED is an electroluminescence device, which is very sensitive to current. Human body carries static electricity
which can break down the internal PN junction.Do not touch the LED display screen without wearing gloves.
2. Dust
The LED display screen is designed according to the indoor IP3X standard, but it contains high-density
electronic circuit inside the box. So it is very important that the LED display screen is dust proof and clean it
regularly.
3. Water vapor and oil fume
LED beads surface can not be treated with water proofing due to its density and sizing, Moisture environment
and water vapor can cause short circuit easily which may resulting product failure or even resulting fire that may
burnt the LED display screen in the worst case. Therefore, LED display screen needs protection from water vapor
and moisture.
4. Physical impact
The LED display screen is a very delicate device. It needs protection from any kind of physical impact, as it
may resulting damage to LED beads or circuit board.
• Check if the power cord is connected to the wall outlet, and if the wall outlet is energized.
• Check if you have pressed the Power button or Standby button.
• Check the volume.
• Try to find the appliance that affects the LCD monitor and keep it way.
• Try plugging the LCD monitor's power plug into another outlet.
• Check whether the power supply is connected.
• Check whether the power supply plug is properly connected.
• Check whether the power outlet has electricity.
• Check whether the AC switch is enabled.
• Press the reset switch and start the system again.
• Check whether standby mode is enabled.
• Check if there is a power outage in your area.
• Turn on the display and see if the problem is with the signal and control system.
• Check whether something is obstructng the display's remote control receiver.
• Check whether the bateries in the remote control are installed correctly.
• Check whether the bateries need to be replaced.
• Remove and insert the HDMI cable again.
• Check whether the internal PC is properly inserted in the slot.
• Check whether the intemal PC is in shut down mode.
• Press the power button on the internal PC, and manually start up the internal PC.
Solution
19
LED All-In-One User Manual