Fuji SP3000 stripes/lines/artifacts

[Isfint]

Hi,

Scans from the SP3000 show colored lines/stripes frome time to time. Picture attached!

I cleaned:

Entire Image Box, cards and ram

Leds

Lens

DSP 1: failure (set to invalid)

Everything was fine until recently. 

Any options besides buying another GPA23? What causes this? Dirt, power, LEDs, memory?

Thx for any help!