DreamBox DM800 – Hardware problem

I have a DM 800 HD that don’t start anymore, the display is black, no led only etherned leds are on and steady, also without cable.

After some search I have find a guru of Dreambox hardware on this forum

http://www.8a8f8.com/ubbthreads.php/topics/40980/DM800HD_schedules_%28and_informa#Post40980

and now I am investigating the problem.

Here there is some schematics thata I have find there (Credits to Johnny B)

1583U23-24-25-oct-2k112569Fault_finder_pinout_P5U7-Schematic-DM800-v3-300511U6-2012U11-Usb

dm800-5v-circuit-information

Other links:

http://wiki.blue-panel.com/index.php/Differences_from_DM800_HD_PVR_to_Cloneboxes