Troubleshooting - Hisense PDP4220EU Service Manual

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Abnormal display
Enlarged display

Troubleshooting

OFF
P.LED
blue
red
Osd?
Press [zoom] on the remote control to check whether it is in zoom mode
The TV system has wrongly identified 625-lines system as 525-lines system.
Change to another source (such as video, pc) and change back to TV to correct it
CHECK POWER CONNECTIONS
ok
VGA/H
DTV?
OSD ?
no
Press [power] on the remote to quit stand-by mode
ok
Check main board connections/ change main board
no
Check LVDS connection & module connections
12
no
Check main board connections
/change main board
Check audio board connections
/change audio board
yes
off
L.Led?
FLICKERING
Check lvds connection
Check module driver
Board connections