To make it a bit more easier to try to fix this DreamTv player I have made a overview of some (important) voltages and ohms values as also some more info which could be handy. As you can see on this picture. Click on the picture to see it fully.. I've also include some datasheets to download related to the parts. At this moment I were not be able to find the missing ones, but it's at least a good start. As for the 8 pin motherboard connector near the usb service port is still a bit uncertain what it is. But based on the ground and the vcc pin it could be this. But it could also be a SWD 8 pins port or something else.
marking S3C sot23-6 Unfortunately I haven't found it yet, hopefully a fellow member can help you with it. Or else maybe a Mini360 DC-DC Buck Converter as a replacement is a possible solution.