Thanks in advance!.
I have the same issue, managed to screw up my unit by being impatient during the Firmware upgrade.
Contacted both Onkyo USA and the local authorised repair center in South Africa, both basically told me this unit is a brick now. Unless I replace the Microprocessor. I am trying to figure out where this is located.
According to the local repair center, the HDMI board is where the MP is situated. Removed the board competely to see what happens but it made no difference. Any help will be welcome.
Model : TX-NR708
|Onkyo Tx Sr707 7 2 Channel A V Surround Home Theater Receiver , Onkyo Tx Nr708|