My keyboard KOMPLETE KONTROL S88 MK1 won't turn on

Vladimir2005

My keyboard KOMPLETE KONTROL S88 MK1 won't turn on. There is no physical damage, but the device does not turn on, and is not recognized when connected to a computer via USB. Can I find somewhere a schematic of a device to attempt a repair?

Jeremy_NI

@Vladimir2005 In any case feel free to contact our hardware service: https://bit.ly/NISupport_Hardware

Uwe303

Hello,

do you have the power supply conected too?

Vladimir2005

Good morning,

Oh sure. When turned on - no signs of life.

Uwe303

Can you test the power supply with a voltmeter?

Vladimir2005

Yes, power is ok. The current consumption when the "on" button is pressed is 50mA.

JesterMgee

P/S is probably dead then, often they will show voltage but output no current when they die, or volts drop. Since the MK1 does not power from USB I’d say you need a new P/S

Vladimir2005

Alas, the power supply has nothing to do with it. I have a laboratory power supply, which actually measures the current consumption of the device.

JesterMgee

ok, dead then.

Robert13

Maybe the power regulator inside near the USB port. I have repaired a S49 MK1 once and checked the power regultaor. The output has to be a bit less than 5 volts.

Jeremy_NI

@Vladimir2005 In any case feel free to contact our hardware service: https://bit.ly/NISupport_Hardware

Vladimir2005

https://community.native-instruments.com/discussion/comment/37213#Comment_37213

If I had a schematic, I could diagnose the main board

Jeremy_NI

@Vladimir2005 Then maybe you can try and ask my colleagues.