Onkyo TX-NR747 keeps shutting down

[hephie]

Hi, I have the Onkyo TX-NR77 since about a week, and it was working flawlessly. However today I turn it on, and 1-2 seconds later, it automatically shuts down/off again. I did mount my speakers to the wall today, so the speaker cables were detached and attached, but I verified twice, I connected everything correctly.

I already tried unpluggin the power.
I already did a soft reset (Press power on button while holding the CBL/SAT button), display shows clear and onkyo shuts down.
Same issue after power on.

Detached all cables except for the power and did the 2 steps above again.

The Onkyo keeps doing the same.
Starts up
Show "Volume 30 for max 2 seconds"
Shuts down

Any ideas?
It's still under guarantee, but I'd rather not send it back and wait for weeks until it's repaired.

 

[soundguruman]

Hi, I have the Onkyo TX-NR77 since about a week, and it was working flawlessly. However today I turn it on, and 1-2 seconds later, it automatically shuts down/off again. I did mount my speakers to the wall today, so the speaker cables were detached and attached, but I verified twice, I connected everything correctly.

I already tried unpluggin the power.
I already did a soft reset (Press power on button while holding the CBL/SAT button), display shows clear and onkyo shuts down.
Same issue after power on.

Detached all cables except for the power and did the 2 steps above again.

The Onkyo keeps doing the same.
Starts up
Show "Volume 30 for max 2 seconds"
Shuts down

Any ideas?
It's still under guarantee, but I'd rather not send it back and wait for weeks until it's repaired.

A. Bad speaker
Disconnect speakers and re-test. Connect 1 speaker at a time, and re- test.

B. Bad speaker Wire, pinched or shorted

C. Defect / shorted amp
The amp turns itself off when there is a shorted speaker wire, bad speaker, or an internal (inside amp) short circuit.