Sounds like the Flash is corrupt mate it happens a fair deal on these boxes but can be fixed with a Null modem Cable easy enough if you have one?
Recover Dead ***box/Openbox Flash Using Serial RS232 Null modem Cable
A how to guide on how to fix a corrupt firmware image in the OpenBox S9/S10 and ***box S)/S10 Even if it seems bricked.
This guide is taken from another forum so big thanks to auther.
Box does not respond or displays On?
If your box does not respond, or no displays light there is a good chance the current firmware on the box is somehow corrupt.
You will need to use this tool, connect a Serial RS232 Null Modem Cable to the box and follow the instructions.
Hopefully it will bring your box back to life.
instructions
Download the File Which i am sure is posted on Site But Can be found on google by Searching
1. Connect up your PC to the ***box/Openbox
using a null modem serial cable.
2. Switch the box OFF
3. Run EromUpgrade.exe then check the
com port setting is correct
4. Select the latest firmware .abs file. (Download her if you don't have any)
5. Select "next" then switch ON the box
and follow the instructions to load
and flash burn the firmware.
6. If the process does not start, try
various time combinations of switching
the box ON after selecting "next"
7. Don't switch the power off or disconnect
while the download & flash is taking place.
If you cannot contact to your box check your null modem cable. Connections are like shown below
pin 2 ...to... pin 3
pin 3 ...to... pin 2
pin 4 ...to... pin 6
pin 5 ...to... pin 5
pin 6 ...to... pin 4
pin 7 ...to... pin 8
pin 8 ...to... pin 7
Important: Go into device manager (goto start-->run-->type "devmgmt.msc" )
or right click My Computer--->manage--->on the left side u find device manager
and check that you are choosing the right com port. If possible use computer with serial R232 com port built on mainboard.
Have fun