I bought a GK used MB200 a couple of years ago to carry in my bag as an emergency backup or DI. It occasionally made a static type noise that would stop if you tapped the top of the unit. Growing tired of the noise, I opened it up and carefully reseated every connector, and now the unit doesn't power up at all. Convinced I was at fault, I tore down the unit completely but did not find a single lifted pad or torn trace. I reflowed every connector just to be sure. The only fuses I found were two on the Ice module and they're both good, so I am at a loss. I haven't yet looked at a schematic but with my limited electronics expertise along with SMC construction, I doubt there's much I can do. I have AC in, the power switch functions properly, but there's no DC present anywhere. It's not worth sending it off to be repaired. The MB200 is a great size, I wouldn't want anything larger. The Trace Elf looks interesting. I am unaware of anything else at that size and price point. Any recommendations for a replacement? Thanks.