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Origineel bericht door: Chris Stables ,


I am not sure why you removed U3701 half backlight would not indicate that it is faulty with OL on pin 35. This has only added variables to the repair. You need to follow the PP_LCM_BL_CAT1_CONN from the connector to U3701. Check the connector pad and not just the pin.

You say that Fl3902 is not faulty. What is the diode reading on both sides of the pads? If the PP_LCM_BL_CAT1_CONN line is continuous to U3701 the only thing that would cause OL on pin 35 would be a missing or damaged pad at (C1) under U3701.

The only time I have seen A1 and B1 shorted together is when other components have been bridged like FL3903 to Fl3901. Check very closely under your scope.

Remember the more things you try and replace on this repair will cause more variables. Make sure the component you remove is indeed faulty.