output and there is 2.45V voltage; check each signal output pin of U209 and there is 2.5V voltage;
check two ends of Tc240 capacitor and there are 2.5V voltage; power off and test Tc240 capacitor and
there is 200-ohm resistance; after changing this capacitor, trouble is removed.
Example 15 Symptom: HDMI has no output
Description: other video channel output is normal, only HDMI port has no output
Analysis and troubleshooting: when this trouble appears, check pin 18 of HDMI output terminal,
+5V detect voltage is only 1V; then test voltage in L715 and find voltage on two ends of L715 inductor
have 4V voltage difference; use multimeter to test L715 resistance and it is about 1K , now inductor
has totally become resistance; after changing it, trouble is removed.
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