Posts tagged "detectives"

J-Link Detective Squad: Dead KORG microKEY-37

Sun 08 November 2015

Korg microKEY-37

I love the KORG microKEY 37. It's an excellent entry-level MIDI controller that fits unobtrusively on your desk, great for impromptu jamming when you should be focused on something boring like "tax" or "finding a new house before eviction day". The keys feel pretty soft, as they use rubber domes instead of metal springs, but the velocity response is excellent. I highly recommend it, as it's one of those products which basically lives forever and delivers year after year of good service.

I bring this up because back in about February, my KORG microKEY 37 stopped turning on. The unit would no longer connect via USB; each time it would give up at different points during the initial handshake, with dmesg spewing a number of unhappy messages. Here's one attempt at plugging the device in.

[Sun Sep 27 06:00:56 2015] usb 3-1: new full-speed USB device number 17 using xhci_hcd
[Sun Sep 27 06:00:56 2015] usb 3-1: device descriptor read/64, error -71
[Sun Sep 27 06:00:57 2015] xhci_hcd 0000:00:14.0: Setup ERROR: setup context command for slot 16.
[Sun Sep 27 06:00:57 2015] usb 3-1: hub failed to enable device, error -22
[Sun Sep 27 06:00:57 2015] usb 3-1: new full-speed USB device number 18 using xhci_hcd
[Sun Sep 27 06:00:57 2015] usb 3-1: device descriptor read/64, error -71
[Sun Sep 27 06:00:57 2015] xhci_hcd 0000:00:14.0: Setup ERROR: setup context command for slot 17.
[Sun Sep 27 06:00:57 2015] usb 3-1: hub failed to enable device, error -22
[Sun Sep 27 06:00:57 2015] usb 3-1: new high-speed USB device number 19 using xhci_hcd
[Sun Sep 27 06:00:57 2015] usb 3-1: Device not responding to setup address.
[Sun Sep 27 06:00:57 2015] usb 3-1: Device not responding to setup address.
[Sun Sep 27 06:00:58 2015] usb 3-1: device not accepting address 19, error -71
[Sun Sep 27 06:00:58 2015] usb 3-1: new full-speed USB device number 20 using xhci_hcd
[Sun Sep 27 06:00:58 2015] usb 3-1: Device not responding to setup address.
[Sun Sep 27 06:00:58 2015] usb 3-1: Device not responding to setup address.
[Sun Sep 27 06:00:58 2015] usb 3-1: device not accepting address 20, error -71
[Sun Sep 27 06:00:58 2015] usb usb3-port1: unable to enumerate USB device

Oh snap! I'm torn on what to do... buying a replacement is doable, but this one was limited edition and a replacement wouldn't be the same cool colour scheme! Maybe there's a clue to what went wrong inside the unit?

Article continues here! KEEP READING, YOU