![background image](http://html.mh-extra.com/html/haier/hl15e-d/hl15e-d_service-manual_138095053.webp)
42
voltage : +12V ,+12V,+12V ,+12V
connector:CN2
(
P1,P2,P3,P4
)
12.3 Main board failure check
State:No picture
First,check cables which connect with PSB and the Lvds wire with the panel.
State
:
No sound
First
,
check cables which connect with Main Board
,
then check as follows
1) Check input voltage as NO picture
2) Check speaker output
First,check speaker anode(+) and cathode(-),confirm speaker short or not. If short ,replace speaker.
Second,check CN21 with oscillograph, confirm wave output or not.
Connector: CN21.
12.4 Pannel failure
Failure Mode
Part Name Description Phenomena
Failure
cause
V B/D
Vertical bar
V Dim
Vertal gray
line
V L/D
Vertical color
line(light or
dark forever)
H B/D
Horizontal
bar
H Dim
Horizontal
gary line
TCP
H L/D
Horizontal
line(light or
dark forever)
Block Defect :TCP cracking or cracking
Dim or L/D :TCP Sunken
:TCP lead cracking
:ACF bonding short
:Awful environment and something electric enter into
LCD
:Mis-align between TCP and Panel
:Panel failure
:TCP failure
Failure Mode
Part Name Description Phenomena
Failure
cause
Summary of Contents for HL15E-D
Page 29: ...29 ...
Page 51: ...40 11 WIRING CONNECTION DIAGRAM ...
Page 57: ...46 Sincere Forever ...