![background image](http://html.mh-extra.com/html/haier/hl42b-b/hl42b-b_service-manual_136767056.webp)
57
First
,
check cables which connect with PSU
,
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 CN2, CN3 with oscillograph, confirm wave output or not.
Connector: CN2, CN3
10.2 PSU failure check
State: No power
First, check cables which connect with PSU, then check as follows
1) Check PSU input voltage
(
AC input
)
voltage :
~
120V
connector:CON1
(
P1,P5
)
2
)
Check PSU output voltage orderly
:
voltage :+5V(Stand-By)
→
ON
(
5.0V
)
→
+24V ,+12V
connector:CON4
(
3
)
→
CON4
(
1
)
→
CON4
(
6,7
)
,CON2
(
1-4
)
State
:
No sound
Содержание HL42B-B
Страница 8: ...8 3 2 2 Connector definition Main board connector ...
Страница 32: ...32 2 Video It include Auto Color and Color Temperature ...
Страница 34: ...34 Channel menu includes 5 Function Range Scan Single RF Scan Factory Scan ...
Страница 54: ...55 CN4 CN5 J28 10 1 3 No sound ...
Страница 60: ...61 Sincere Forever ...