5. HDMI doesn't display
Check input connect J7101.
Can you see the normal waveform?
Yes
Check DDC communication lines(IC702 Pin5,6)
Yes
J7101 may have problem. Replace this Jack. No
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| After checking the Power of this chip, you should |
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No | decide to replace this or not. | |
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Check HDCP communication lines(IC701 Pin5,6)
Yes
No
After checking the Power of this chip, you should decide to replace this or not.
Check the input of MST3382M(IC7012). This signal is TMDS.
Can you see the normal waveform?
Yes
Check the output of MST3361(IC7012) Can you see the normal waveform?.
Yes
Check the input and output of BCM3550(IC1001). Especially you should check
The H,V sync and clock.
Can you see the normal waveform?
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| After checking the trace of TMDS lines and power | |
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| of MST3382M, you should decide to replace | |
No | |||
MST3382M or not. | |||
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| After checking the Power of MST3361 you should | |
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| decide to replace MST3361 or not. | |
No | |||
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| This board has big problem because | |
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| Main chip(BCM3550) have some troubles. | |
Yes | After checking thoroughly all path once again, | ||
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| You should decide to replace BCM3550 or not. | |
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