Hacking Hardware Black screen when trying to boot atmosphere?

[lpoolm]

Hi, so I bought a faulty switch off ebay, not turning on.
Was expecting it to be hardware but it seems to be a software issue. Hoped it was set to auto rcm but it wasn't.
It connects to my laptop and boots into Hekate, (I have backed up the nand.)
I have started with a fresh sd card with latest atmosphere etc but when I try to launch cfw it just goes to a black screen, no further.
So it must be a emmc issue/software issue?
But I am a little stumped now on what route I should take, I cannot boot ofw or cfw, am I right in thinking something to do with miss-matched fuses?
Any pointers on what I could try would be great.
thanks

 

[johnnymnemonic]

If it really is a problem with the NAND/software then you can try to rebuild the Nand.
search for the Switch nand rebuild guide maybe this will help you:
https://gbatemp.net/threads/nand-rebuilding-for-no-backup-broken-emmc.593995/
But i don't know if this would fix your problem, i never needed to rebuild a nan before
You can mostly rule out a fuse problem as cfw doesn't care about fuse count and should work regardless of the value