I have an iPod nano 3rd with a good LCD that boots into nothing, just a white screen. Diagnostics not available either. I suspect a corrupted or dead flash memory. I’m thinking of desoldering it and checking with a tsop48 programmer. Any ideas what else might be an issue? Any ideas on what are some good replacement memory chips that are compatible? I have some old 8gb nand from iPod nano 4th generation.