How can I fix my Proview TFT CY-565 Monitor model 568?

I have a proview TFT monitor CY-565 model 568
that has started to flicker a black screen now and then. The power light stays green. Had tried the monitor on my laptop and changed the cable and it still does this flicker on and off. It does this every time I switch my pc on but not until a while has past, then it might do it once or two or three times in an hour - is there any way I can get into the monitor to repair or can you suggest anything else?
kind regards