Troubleshooting - Philips HTS5120/12 Service Manual

FLOW CHART NO.1
The power cannot be turned on.
Check the Power Switching Adaptor if it has DC 27V output .
Check the 1st pin which location is U1 if it has DC 27V input
Check the 2en pin which location is U1 if it has DC 5V output
Check the Inductor which location is L1
if it has DC 5V
FLOW CHART NO.2
Has not voice form the speaker
Check the 2en pin which location is U17(PT2313)if it has DC 9V
Check the 1st pin which location is U1 if it has DC 27V input
Check the 4th pin which location is U22 and U24 on the AMP
Board wether has MUTE signal input
FLOW CHART NO.3
Can not Read Dish
Check the Cable(CON1 and CON2) which connected to the
Loader Driver wether connection is OK?
Check the L11 L12 whether has DC 3.3V
Check the R242 wether has DC 3.3V

Troubleshooting

Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Try to replace a new Power Switching Adaptor
No
Replace the L2 & L3
No
Replace the U1 IC(AP1501-5V)
No
Replace this Inductor
Replace a new one
No
Check the D23 diode whether has DC 2~3V
Check the 2en pin which location is U17 if it has DC 9V
Replace the U17 IC(PT2313)
No
Try to connect again
No
Replace a new one
No
Replace a new one
11-1
N o
Y e s
N o