Hitachi L42EC05AU User Manual download pdf (Page 35)

Troubleshooting

Before calling service personnel, please check the following troubleshooting guide. If any problem still

persists, unplug the TV set and call for servicing.

Symptom Check List

No picture, no sound sCheck if the main power of the TV is turned on.

sCheck the connection of the power cord and/or other cables.

Normal picture, no sound

sCheck the volume level.

sCheck if the button has been pressed or not.

sCheck the connection of the external equipment.

Poor colour or no colour, normal sound

sCheck the value level of “Brightness”, “Contrast” and

“Colour” in Picture menu.

Multiple images, normal sound sCheck the antenna connection and direction.

sFine tuning the TV.

sCheck the connection of the external equipment.

sThe TV station may have broadcast difﬁculties. Try another

channel.

Snowy picture, poor sound

sCheck the antenna connection and direction.

sThe TV station may have broadcast difﬁculties. Try another

channel.

Intermittent interference

sCheck if the source of interference is shield well.

sRemove those kinds of electrical devices away from the TV.

Poor stereo sound

sThe TV station may have broadcast difﬁculties. Try to

change to mono mode.

Remote control does not work sCheck if the batteries are installed correctly.

sThe batteries may be exhausted. Replace them with new

ones.

sRemove all obstruction between the remote control and the

remote control sensor.

sEnsure there is no strong light shining on the remote control

sensor.

HITACHI logo appears on the screen

sThe TV cannot detect any signals from any input terminals.

sCheck if the cable is connected correctly and ﬁrmly.

sCheck if the power of any external equipment is turned on.

sCheck if the input source selection is correct.

HITACHI logo or “Unsupported Signal”

appears on the screen (RGB mode only)

sCheck if the display resolution and frequency from your PC

is a valid mode for the TV. Refer to the recommended RGB

input signal chart

Image not centered (RGB mode only)

sAdjust the “H Position” and “V Position” in the Picture

menu.

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Hitachi L42EC05AU User Manual Page 35

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