Skybox F4, Hardware

Newbie here so please be gentle.

I'm new to this sat receiver game and recently acquired a skybox F4.

It went pete tong from then.

Briefly, no life out of the box, tried the Rs232 updating trick only to find an IC on the board cooked.
Typically,the cooking process has destroyed some of the part number thus making a Google type search futile.

For your information, its positioned at U7 on the board and the bit of info regarding part number is ### G2HA

So,a couple of questions are please:

Is there an available schematic of the PCB for this board ? (main board not the power board)
Are spare boards available ?
Is it worth repairing ?

Thanks in advance for any replies.