Quoted from schudel5:I can't remember the last time I've ever had to change BR2. That's usually the last thing on my list. Here is my list in order of things I check/change.
J101
J102
J114
J201 (the one on the CPU whatever it's called)
Z-connector
C5
C4
Voltage regulator
BR2
Agree 100%. For me, it was all my connectors (everything with a J in the above list) that caused my 5V reset.
And like others have said, the Kahr board is a TEMPORARY fix. Sooner or later, your game will ge tto the point even that doesn't fix the reset issue. Ask me how I know.