It really is enough of the Onkyoblow nonsense. It is one unit of many out there. Accessories4Less hasn’t stayed in business all of these years selling refurbished Onkyos. They can thank Denon/Marantz for their orchards full of lemons.
Diagnosing problems sight unseen without any firsthand information is more the practice of talk radio and TV “doctors” than that of any experienced, respectable physician. Perhaps leopards can change their spots, and not for better in this case, it seems.
Actually in years past, I had a disproportionate number of Onkyo units brought to me to fix. I was not impressed with them. I know they have new owners now, but the pedigree of those owners is not encouraging.
The whole design of this HT equipment is actually poor, and unintelligent design. If I was heading the design teams there would be radical changes pronto.
The design layouts need massive rethinking and improvement. Auto diagnostics and serviceability needs to radically improve. In addition when up grading you should not have to throw out large boxes. It should be updatable. Don't tell me this is impossible as home computers can be updated over many years. I know that because I have done it.
I have to say the rot set in with the start of Far Eastern manufacture back in the seventies.
I remember years of much better design, and still have some of it working in my system.
I know there is a much better way, and actually I personally think current design practices are appalling.