Sorry for hijacking the thread, figured it was better than creating a new exactly same. I have pretty much same story for a Switch, it was bought as "defect with battery connector broken, worked before that", person before me had managed to tear the connector from the main board and nothing else, I now think this is bull though. So I got it quite cheap, the console started and turned off after Nintendo logo when it was broke and I used a charger. I soldered the connector and battery worked. However it did the same thing. Nintendo Logo and then turns off.
I have now tried every possible guide to restore the FW 12.0.2 (Boot0/Boot1/System etc from above guides and also Such Meme, Many Skill's unbricking guide that uses systemRestore.te script to flash from TegraExplorer) that was on the console (I checked it against a downloaded that had exactly same files so all seems well. Tried a 6.0.1 Firmware also.
The console has 15 burnt fuses, doesn't matter to me, I just want to get it to work with either stock FW or CFW.
What works:
* RCM
* Sending Payloads
* Flashing partitions
* Hekate
What doesn't work:
* Booting normally it shows Nintendo Logo and turns off
* Booting it into Recovery with +/- when booting normally due to it turning off
* Booting through Hekate and Stock it shows Hekate logo and turns off
* Booting Atmosphere through Hekate or sending fusee-primary payload shows Atmosphere logo (3 screens of logos) and then turns off
Are there any more payloads for testing hardware or so? Everything I have seen in Hekate looks fine as far as I can tell, I have no issues with biskeys or dumping/flashing anything.