P7004 may have problem. Replace this Jack.After checking the input TR of RGBHV, you should decide to replace these components or not.After checking the Power of RGB switch you should decide to replace component switch or not.After checking the Power of MST3361 you should decide to replace MST3361 or not.After checking the Power of MST3361 you should decide to replace MST3361 or not.This board has big problem because Main chip(BCM3550) have some troubles. After checking thoroughly all path once again, You should decide to replace BCM3550 or not.
NoNoNoNoNoYes
YesYesYesYesYes
Check input connect P7004. Can you see the normal waveform?Check the input of Component switch(IC5002). Can you see the normal waveform?Check the output of Component switch(IC5002). Can you see the normal waveform?Check the input of MST3361(IC7004 Pin41,44,46). Can you see the normal waveform?Check the output of MST3361(IC7004 ). Can you see the normal waveform?Check the input and output of BCM3550(IC4006). Especially you should check The H,V sync and clock. Can you see the normal waveform?
4. RGB_PC doesn't display
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