Common Mistake Endstop short-circuiting // kortsluiting Endstop aan frame

Best Reader,

I have made a common mistake when i first powered and homed my Prusa I3 the Z-axis had made contact with the frame which short-circuiting the arduino Mega 2560,
The Arduino still work, compile and uploads marlin adjustments and drives my printer,

My question before buying a new Arduino board: is there a method to measure what part of the Arduino has the short-circuit

thank you for your effort, hoping on your swift reply!
Best Regards,

BProcee

came to the conclusion that a Volt regulator had burnt through.
which sits left above the arduino