Fpga Troubleshooting - LG LST-5600A Service Manual

5. FPGA TROUBLESHOOTING

(1). NO ATSC AUDIO & VIDEO
1) Check IC801, IC960 and surroundings
3.3V is supplied to IC801?(Check C802)
1.5V is supplied to IC801?(Check C812)
27MHz is output from X801?
Check the ATSC/QAM tuner part
YES
YES
YES
NO
NO
NO
3-15
Check the Power Supply Part.
Check IC960 and surroundings.
Check X801