Sharp PN-75HC1 Operation Manual page 43

The monitor makes a cracking sound.
• You may occasionally hear a cracking sound from the
monitor. This happens when the cabinet slightly expands
and contracts according to change in temperature. This
does not affect the monitor's performance.
After the Power LED illuminates in red and blue
alternately, the monitor automatically turns off, and the
Power LED illuminates in red.
• When the internal temperature of the monitor rises
excessively, the monitor automatically will turn off.
• Remove the cause of the excessive temperature rise.
- If the monitor enters standby state due to a rise in
temperature, to return to normal display, turn the
power switch off and then back on again. The monitor,
however, will enter standby state again if the cause of the
temperature rise is not eliminated. (See page 7.)
- Check whether the monitor is placed at a location where
a quick rise in temperature is likely. Internal temperature
rises quickly if the vents on the monitor are blocked.
- Internal temperature rises quickly if dust accumulates
inside the monitor or around the vents. Remove dust if
possible. Ask SHARP dealer about removing internal dust.
Troubleshooting
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