If you want to refurb NAND wafers, you need to physically bake the chips and get them hot to get them to release any stored electrons and get some wear life back.
Now that is REALLY interesting! I don't suppose you have any idea of what that temp range is?
I'm thinking mainly in terms of solder melting point, capacitor popcorning and other exciting phenomena like that.
If it requires desoldering the NAND first I suspect thats a bridge too far for me as far as PC SSDs go.
I don't mind SMD rework and will even reball BGAs if I absolutely
have to so it's good to know it can be done if it must be.
But I work with a lot of industrial control gear for CNCs, PLCs and the like. A lot of it uses rather old electronics.
As in Z80, 80186, 486s.
That NAND trick has the potential to get me out of a jam in the future - if something is banjaxed anyway I might as well have a go. Some of those controller boards, if you can actually
find one, can cost tens of grand and might only last a week.
The heavy iron lasts for many decades and most of the electronics will last just as long. PSUs need caps replacing of course but most of the silicon lasts a lot longer than newer stuff due to the size of the gates.
Modern stuff with <10 nm feature size and logic level swings of a fraction of a volt wears out very quickly due to electron migration, cosmic ray strikes, manufacturing tolerances, stuff like that.
I know that some of the highest astronomical observatories in the world like the ones in Chile have to pay serious attention to that stuff these days.
My understanding is they may end up having to tunnel deep into the rock to provide protection for their new server farms.
They sat test servers in the observatories just doing stuff like calculating pi and running memtest - they barely lasted a month. The RAM started dying long before a month then the CPUs died.
By comparison a Z80 uses 4,000 nm features and a full 5V swing.
Those aren't an issue but the solid state storage they write logs and calibration stuff to is. It’s usually primitive flash or bubble memory which is where the baking trick might be useful. It usually only holds a few kb but its a very very important few kb.
Their software lives on 2708 type ROMs. My first move when I became responsible for them was to pull the ROMs and make copies.
Many thanks
@acquacow, you done learned me some good stuff once again.
If you're ever in England I owe you supper and a pint.