Tv Abnormal - Sankey CLCD-2630 Service Manual

6. TV abnormal

Check antenna input
Replace T1
Tv no auto search /no signal
Check RF input
Check L7/L8
Check U14 and controlled circuit
TV no sound (picture ok)
Check if there is audio signal output
inT1 Pin11P14.
Check C46/C48
Confirm U6(msp3415)
1． Power supply all right
2． Re-position all right
3． Crystal all right
- 28 -
Confirm if T1 Pin3Pin13 is 5V
Check if T1 Pin4Pin5 I2C all right
Check if there is carrier wave output in T1 Pin12
Replace T1
Check if I2C has
connected to MCU
上 U29