Haier HL42XR1 Pannel and vsc connect bad, Maybe caused by surge current and EDS, Chip lose Action

Page 54

3.Pannel and vsc connect bad

Bright and dark

Flashing

display alternately

Failure

Mode

Part

Name

Description

Phenomena

Failure

cause

White

B/L

normal,

only

!

white

screen

Screen

display

Maybe caused by surge current and EDS

Black

B/L

normal,

only

Black

screen

Screen

display

Circuit

Flicker

Crosstatk

LCD Vcom

imbalance

Abnormal

Only

color

Capacitance

improper bring crosstalk

inside

LCD

Color

abormal

pannel

Only

color

1 .Chip lose

action

Abnormal

2. IC short

or jointion

bad

abnormal

Color

3.Pannel

and vsc connect

bad

Failure

Mode

Part

Name

Description

Phenomena

Failure

cause

Mechanical

When

turn

Caused

by

Mechanica

noise of

backlight

panel,appear

Noise

unit

cacophony

Ripple

Connectric

circle

Causeed

by between mechanism

and

pannel

B/L off

B/L lose action

*Connect

badness

between

wire

and

electrode

B/L dark

B/L

brightness

*Connectbadness

darker

than

normal

Shortbetween wire and electrode

B/L

wire

B/L wire damaged

Operation

abnormal or systemic

noise

damaged

54

Image 54

Contents Customer Model HL42XR1 Service Model HL42XR1a Contents Trouble General Guidelines Important noticeFollow the regulations and warnings Ordering Spare Parts Safety Check after RepairmentUsing Icons Photo used in this manualLocation of Controls and Components Main Board & AV Board Function Description Main BoardCN1 +3V3SB 41 D ON/OFF No Conntign No Conntien No Conntion No ConneXion Hrst Lvds Reiver Signal C+Descdion Exmal VBR From SystemVlcd 2Remove the Back Cover Remove the Pedestal Remove the speakerRemove the Terminal Bracket UnitRemove the Main board Remove the power moduleRemove the one screw, take out the remote Control board Remove the keypad controlAccessories Externa Equipment ConnectionsExternal Equipment Connections Choose Your ConnectionExternal A/V Source Setup DVI AudioVGA Digital Set=top Box Video Audio R Audio -R Video L-AUDIO RConnecting a computer HDNll and DVI Connection Cable sample Connecting Headphones Wider Hole and BladePolarized AC Cord Plug Basal information HL26K1/HL32K1/HL32XK1/HL42XK1@ @ Oo @ Back panel connectionsSetting Up Your Remote Control Function introductionMTS/SAP FRE£ CHL/SI Guide CCD ARC Favorite Block diagram Circuit DiagramMT5380 DDR1 LOOoF,lOV ----0.1oF lOOK CE3O 71CO4O2/SMDOUT CO4O2/SMDDV33 USB DP UI3DUSB5V USB on?,5 Bx4PDDoR120 o ?56?,5,5 RX0CB RX0CB N RX0C NRX0 IB N RX0 I N RX02B N RX02 N RX0C1234581O15 131415315 12V 23581O13 AV33 124781O13 3V3SBCNC4 HS-SA-W SI320,HAIER YpbprolinDVD¥1 DvdlR187 R158,A.27 ?00 ?orPC9 TJCS3A/NC II.........ALIO DvddC4zuF16v/ 5H7 TestCNC £10UWAMPWiring Connection Diagram Pov,,,,pp modoiMeasurements and Adjustments How to enter into Service ModeVideo Page Page Backlight Backlight adjust the backlight Page Simple check System Programblack White Refer To relativePower Supply Board failure check Main board failure check State No SoundState= No picture No Raster on PanelPannel failure FailurePannel and vsc connect bad Connect Badness Between Wire ElectrodeShortbetween wire and electrode Maybe caused by surge current and EDSB/L unit Part Name Description Phenomena Failure causeScrew Sincere Forever

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