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Hi,
Last Week My Onkyo HT-R494 front panel's all buttons including volume + Standby got Frozen.
It is luckily connected with TV with CEC HDMI ARC before it jammed so working fine with movie and audio.
But, cant change input and cant use any of the front panel buttons and also cannot be reset as buttons are not working.

Any idea how to fix, can I reset through motherboard or EEPROM??
Any idea/help would be appreciated.
 

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Assuming that nothing was spilled in the unit, then I would first unplug all the HDMI cables
from the back of the receiver and retry.
If that doesn't work, the check every single push button on the front panel to make sure
everyone "clicks" and isn't stuck.
If that fails, leave the receiver unplugged for a few hours. Good luck!
 
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