Sad to hear, this was one of my favorite places in Akihabara. They have really good selection in tools and parts, I got some mini-XLR connectors and inductors. The first few guys I asked didn't have them, but they pointed me to the stall that did. They didn't speak English, so I wrote "18 uH" on my phone and they knew what I meant.

It's not like those parts would be hard to find online. But they had all that stuff in stock, in their tiny stalls.