Hisense PDH4233NEU, Service Manual

Page: 35 / 52

PDP TV Service Manual
Hisense confidential
35
8
.
Problem solutions:
1. Adjusting sharpness can improve picture definition.
2. Adjusting bright can improve picture administrative levels, it can display black background something.
3. If VGA or YPBPR color isn’t natural. You can optimize VGA.
4. PDP power is very large system. As you power off power. Power component must discharge period of
time. Power can work steadily. If you power off and power on TV continuously. Then power work
unsteadily. Then PDP TV will display deviant picture.
5. TV, AV and S.video are the same white balance setting. VGA is a set white balance setting. HDTV is a
set white balance setting.
6. Picture mode does be divided four modes. such as standard, brightness, soft and custom. If you adjust
factory data, they will increase the same data.
7. If TV don’t work normally, it will take place follow some phenomena.
No. Trouble Measure
1 Turn on the TV, The LED is red, no display
on screen
Replace the main board or updating the
software.
2 Turn on the TV, The LED is blue, but no
picture or/and no sound
You should to replace the main board.
3 In TV state, can not to tuning You should to replace the main board.
4 No teletext You should to replace the main board.
5 No sound You should to replace the main board.
6 can not to updating software You should to replace the main board
7 No reaction with PC You should change the main board
8. If the picture color is not correct in the scart1 RGB source, but the scart1 CVBS is normal .you can
check the fast blank signal is whether high. If it is low, please check the circuit.
9.If the picture is not normal 16:9 mode or 4:3 mode when the signal equipment send 16:9 mode or 4:3
mode, please check the aspect mode whether is in “normal” mode.