LG RT-21FA35R Service Manual page 14

OK
Chec k IC11 p in71, 7 2, 73
( R, G, B o ut )
Chec k p in40( V o ut 1)
1 Vp - p
Q501 , Q5 03, Q50 4
( R, G, B o ut o f IC11)
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NO Pic t ure
NO
NO
Chec k 1 8V 3. 3 V
5 V DC Vo ltag e
.
3 3 V DC
Chec k p in57, 58
NO
SCL, SDA
.
3 3 V DC
manuals search engine
/ No So und
Is Any OSD d isp la yed ?
Chec k rec eiving syst em in MENU
& exec ut e Aut o Pro g ram .
Do es t he auto Pro g ra m
Op erat e p ro p erly
Sto re o n m anual - p ro g ram MENU
NO
. , , Chec k SMPS Trans
Sec o nd ary Vo ltag e
NO
Chec k p in18 Chec k IC13
Reset Vo lta g e ( Reset IC)
OK
NO
Chec k IC12 ( EEPROM)
& SCL SDA Line
OK
Relac e IC11
Chec k / Rep la c e
CPT Bo ard c o m p o nent
- 14 -
OK OK
OK
-
-
OK
Go t o
No So und
Pic t ure OK
,
/