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ELECTRICAL TROUBLESHOOTING GUIDE
7. NO HDMI OUTPUT
No HDMI audio / video output.
JK803's status OK?
JK803 pin18 VCC 5 V OK?
JK803 pin19 HPD about 3.3 V OK?
Is there signal on R841, R842?
Is there signal on TMDS?
Replace IC501.
YES
YES
YES
YES
YES
YES
NO
NO
Check L803 and VCC 5 V line.
NO
Check hot plug detect signal from TV.
NO
Check I2C trace from IC501.
NO
Check TMDS trace from IC501.
2-46
Replace JK803.
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