Hitachi P42T501, P42T501A, P50T501, P50T501A, P55T551 Troubleshooting, Useful Information

Useful Information

Troubleshooting

1. Plasma Television Troubleshooting

No.	Items	Notes
1	Buzzing sound from Plasma	A buzzing sound may be heard when the plasma television is turned on in a very quiet
		room. This is due to the plasma panel drive circuit when it is functioning. The buzzing
	display panel.	sound is normal and is not a malfunction.
2	Infrared interference	Some infrared rays are emitted from the plasma television panel that might affect the
		operation of other infrared controlling equipment.
		High precision technology is used to manufacture the plasma television. But there
3	Bright and dark spots	maybe points that do not illuminate, points that are too bright, and points with color
		different from that of the periphery. Please note that this is not a malfunction.
4	Picture Image	In some cases, residual images may remain after the short term display of still images
		when the picture changes.
	Display panel surface	The plasma display panel display images by means of electrical discharges inside the
5		panel. This may cause the temperature of the panel surface to increase. Please note that
	temperature is too high.
		this is not a malfunction.
6	Plasma Surface	A reinforced glass filter is installed over the plasma panel surface. A strong impact to
		the front panel risk a danger of glass breakage.
7		Please transport the plasma television in it's packing box and placed in an upright
	Transportation	position. Do not transport the plasma television in a horizontal position. This increases
		the posibility of panel breakage and pixel failure.
8	Granular spots	When a screen is seen at point-blank range, a random fine grain may be visible in the
		dark areas of the picture.
9	High temperature	High temperature affect the electric discharge/luminescence characteristic of the PDP
	environment	panel. Do not place the plasma television in high temperature environments.
10	Operation	Operating altitude: 700 to 1,114hPa (9,676ft to -2,484ft). Operating temperature: 41°F
		to 95°F.
11	Storage	Storage altitude: 300 to 1,114hPa (31,912ft to -2,484ft). Storage temperature: 5°F to
		140°F
12	Power ON or OFF	Repeatedly turning the plasma television Power ON and OFF at short intervals may
		result in failure of the television.
		The on-screen motion of an actor's lips or other moving object may not be in sync with
13	Lip sync	the associated audio heard from the TV's speakers. This is caused by timing differences
		in the broadcast signal or DVD content and is not caused by a defect in the television.
14	Control Buttons	There's a few seconds response delay on the control buttons (Control panel or R/C) after
	Response Delay	the TV is turned ON; due to TV start-up routine. Please note that this is not a TV malfunction.

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