Working for a week now wont start

[Rimmel]

Got an ET6000 from the sponsor and its been working fine for a week then it was unplugged to facilitate the installation of a new TV cabinet. Since then the box will not boot fully. It just blank screens. The TV shows a resolution of 576P but it will go no further than that. Green and red lights are visible in the front, nothing has been ftp'd to the box and it has never had a USB stick connected for picons/epg etc.

I have tried reflashing the bootloader from this site and then the v2.3 images (versions 133, 153 and 204). Version 133 shows two linux penguins in the top left corner for approx 10 seconds, but they vanish and the same blank 576p res screen shows. The 153 and 204 just show the 576p blank screen. The reflashing seems to work properly btw.

Any ideas anyone before I have to send it back?

thanks
CT