Projector LED is blue and red, doesn't show a picture anymore

Hello, I got this PicoPix over eBay from an Indigogo User 2 years ago.
I didn’t used it for a while and now as I tried it - I ran into different topics.

1.) Charging shows blue and red LED - it’s the original power supply and cable
2.) If I try to run the projector without PS - there comes no picture
3.) If I use the PS, the screen is meanwhile green

Any thoughts or ideas to solve this?
Thanks a lot

Maybe a problem in the powersupply of the leds or maybe bad connections betwen the leds and the psu board?