Usb problem

PoMerizzi · January 11, 2015 at 7:23 AM

My kemper stopped recognizing my USB key. I've tried 4 different ones after...none would work with it. The Os version is 2.3. So im stuck there, cant update or load in profiles...

Anyone had this problem??? Is it just the USB plug that is broken? I hope so, that would be a 2$ fix.

Raoul23 · January 11, 2015 at 10:32 AM

Save what is on your USB stick on your computer then reformat it on the computer. Next step is to put it in the KPA and reformat with the Kemper. This should sort it. Then add the stuff you saved on the computer back to the USB and everything should work again

PoMerizzi · January 11, 2015 at 10:07 PM

I tried reformating usb keys on computer. The KPA still won't recognized them... Also keys with light on them on light up when plugged in the Kemper Usb port... making it suspicious all together (but I can't remember if lights on usb key worked before with the KPA).

Also tried a system restore for the KPA (holding < > keys at startup) with a usb stick loaded with the last os. It didn't recognize any usb key with this operation either.

DamianGreda · January 11, 2015 at 10:11 PM

Seems like USB port mechanical problem - no contact on data line.

Please keep in mind that KPA need some time after plug the USB stick to recognize it.

Dorrus · January 11, 2015 at 10:35 PM

I had the same problem, but after spraying some contact-cleaner in the usb slot, it worked again
Perhaps you should try that

PoMerizzi · January 14, 2015 at 2:12 AM

Hi Dorrus,

I tried your solution with a simple electronic contact-cleaner (that does wonder to old glitchy pots and other stuff...)...no success :o(. Guess I will have to send it for a repair. Waiting for an update with Kemper about how to ship it.

DamianGreda · January 14, 2015 at 9:22 AM

Did the "External Storage" (under the soft button) showing up on your LCD when you connect the stick?

PoMerizzi · January 14, 2015 at 2:36 PM

Hi Damian,

No, the "external storage" tab doesn't show up. Even if I let the stick for a long time or move to different windows within the KPA. Also, the same problem arise with every stick, even newly formatted ones on the computer.

Probably a dead USB connector

nipturner · March 24, 2015 at 9:10 AM

Hey pomerizzi I have the same problem dude.
Did you solve the usb issue?
Thanks

kpahuitsing · March 24, 2015 at 4:15 PM

Quote from PoMerizzi

Hi Dorrus,

I tried your solution with a simple electronic contact-cleaner (that does wonder to old glitchy pots and other stuff...)...no success :o(. Guess I will have to send it for a repair. Waiting for an update with Kemper about how to ship it.

please please please: don't use contact-cleaner on the USB port (or even better: don't *ever* use contact cleaner.. period: it's evil!)

most problems people have had with USB sticks, have been solved by using another stick: so please use another stick and try again.

MountAnDewMe · June 13, 2015 at 6:25 PM

I just received a used power rack and I am having this same problem. Has anyone come up with a solution or reason for this, I would love to update to the new version but the sticks I have and bought are not doing anything except lighting up on the stick itself. I formatted on the computer like suggested but none of the things I attempted are working. It is as if the stick is simply not there other than the light indicating power to the stick.