Switch lite rcm

Hi
I recently purchased a faulty switch lite from a well known auction site the fault was not turning on or charging so when i opened the console to check the obvious chips for shorts etc
of which there were non on closer inspection with the cpu shield removed i noticed at first missing caps on the cpu which i replaced and also solder on the cpu case along with solder blobbed around the caps above the sd card reader it was clear that a poor attempt at fitting an sx core had taken place so all parts replaced but still no power or turning on.
The only thing that happens is when its connected to a pc the console shows up as apx and when i run tegrarcm gui it tells me that rcm is detected any idea's ?