LG HR832T Service Manual page 108

ELECTRICAL TROUBLESHOOTING GUIDE
9. NO DVB-T TUNER OUTPUT
Check the RF cable
YES
Is there
a signal at TU1001
pin12,21,22 or R1037,
R1036,R1010?
YES
Is there a signal
at R577, R578, R579?
YES
Check IC500 BCM7632
or replace.
NO
TU1001
Vcc pin2 (5 V)
OK ?
YES
TU1001
VCC Pin 3, 9 (3.3V),
Pin 7(1.2V)
OK ?
YES
TU1001
SCL,SDA pin23, 24
OK?
YES
Replace tuner TU1001.
NO
Check R577, R578, R579
or replace.
3-93
NO
Check L1001 & IC208.
NO
Check IC1002 (3.3V),
IC1003 (1.2V).
NO
Check SCL, SDA
from IC500 BCM7632.