http://video.google.com/videoplay?do...57530758&hl=en

as you can see , all 4 channels traces jumps like crazy .
Readout is fine , only the trace is jumpy , in any time base and also
in X-Y mode ....


All power supply voltage range is fine .

replacing VERT switching and VERT out amp didn't help , maybe some of
you guys know what should i go for next ?