Samsung RS2556 Side by Side Refrigerator "da41 00188a" Questions

DA41-00188A ver 1.2 for Samsung RS21 series fridge. In the Technical documentation there should be DA41-00195A PCB board, but was different and it worked. So I bought the same PCB as was there before,

my samsung side by side uased da41-00188a et-r600a ver1.2 this side by side same times isgood work but same times is not work do you halp me pls maybe a little more info will help !!!

...DA41-00188A IS NOT SUPPLYING POWER TO THE SYSTEM. How did you come to that conclusion? Did you open the doors and the lights did not come on? are certain things working but others are not? .. etc. ...

...DA41-00188A VER1.2 ET-R600a. Do you know where I could purchase one. I don't recommend replacing any parts on your refrigerator until you determine that the compressor is not shorting to ground. ...