I have a BDM-020 that has had a fairly hard life. I used it to test different thumb sticks, so it's been hot and cold a lot.
Eventually it just stopped powering on. I have done some probing, but without knowing what I'm looking for it's hard to...
I may try the new ram site, and download more RAM to my Switch. Not sure if ddr3 is the right ram
for it tho. Edit- no it uses floppy Ram, just like @AncientBoi