# X600 - input signal missing
**URL:** https://community.enginedj.com/t/x600-input-signal-missing/20738
**Category:** Misc
**Tags:** legacy
**Created:** [March 29, 2020, 10:58am UTC](https://community.enginedj.com/t/x600-input-signal-missing/20738 "2020-03-29T10:58:41Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@sterniczy](https://community.enginedj.com/u/sterniczy)
#### Post date: [March 29, 2020, 10:58am UTC](https://community.enginedj.com/t/x600-input-signal-missing/20738/1 "2020-03-29T10:58:41Z")
Hello folks,
I have a problem with my X600 mixer. After several months of not using the device, all input signals are gone, on both channels. I tested this with gramophone, USB input from PC and also on CD input, Phono, USB and DVS. Any ideas what could happened? I also already upgraded my firmware to the newest one. Maybe there is an option to make the factor reset by myself?
Kind Regards, Hubert
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### Author:  [@NoiseRiser](https://community.enginedj.com/u/NoiseRiser)
#### Post date: [March 29, 2020, 12:02pm UTC](https://community.enginedj.com/t/x600-input-signal-missing/20738/2 "2020-03-29T12:02:28Z")
Hello Hubert,
What is showing up on the mixer when You power it up?
It can be, that the input/output PCB is broken…?
Gramofon po angielsku: Turntable
Pozdrawiam Michal
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### Author:  [@sterniczy](https://community.enginedj.com/u/sterniczy)
#### Post date: [March 29, 2020, 12:28pm UTC](https://community.enginedj.com/t/x600-input-signal-missing/20738/3 "2020-03-29T12:28:13Z")
Hello Michał,
Sure, Turntable 😄
One update - digital input however works, but output doesn’t -\> I see levels on channel/master indicator, but no output is audible. As you said, looks like somehow PCB output is broken and service is needed.
Thanks for the replay, Regards, Hubert