Sharp LC-40SH340K Service Manual

70
LC-40SH340E
LC-40SH340K
26. TROUBLESHOOTING
26.1. No Backlight Problem
Problem: If TV is working, led is normal and there is no picture and backlight on the panel.
Possible causes: Backlight pin, dimming pin, backlight supply, stby on/off pin
Backlight pin should be high in open position. If it is low, please check Q181 and panel cables.
Dimming pin should be high or square wave in open position. If it is low, please check S16 for Mstar side
and panel or power cables, connectors.
Backlight power supply should be in panel specs. Please check CN705 for MB60, related connectors for
power supply cards.
25.
25.1
TROUBLESHOOTING

Sharp LC-40SH340K Specifications

General

Teletext function	Yes
DVI port	No
HDMI version	1.3
SCART ports quantity	1
Product color	Black
Mercury content	60 mg
Panel mounting interface	400 x 400 mm
Display diagonal	40 \
Display technology	LCD
Display diagonal (metric)	102 cm
Annual energy consumption	177 kWh
Audio decoders	Dolby Digital, Dolby Virtual Speaker
RMS rated power	12 W
Power consumption (standby)	0.5 W
Analog signal format system	NTSC, PAL, SECAM
Digital signal format system	DVB-T

Weight and Dimensions

Depth (with stand)	323 mm
Width (with stand)	970 mm
Height (with stand)	657 mm
Weight (with stand)	18300 g
Depth (without stand)	91 mm
Height (without stand)	613 mm