Some revisions of this board pull a very low standby current (around ) and then drop immediately. A patched boardview is critical here for "Short Tracing". By injecting a small voltage into the shorted rail, you can use the boardview to identify every component connected to that rail, highlighting potential culprits like ceramic capacitors or the SIO chip itself. Where to Find Schematics and Tools For professional-grade repairs, you can find the LA-C701P Schematic and Boardview