Good morning, Jwrc.
I have the same issue as you. I have a Samsung HW-Q990D Soundbar. The soundbar will power on, stay stuck in TV-eARC. No sound, and slow to power off.
I noticed this problem last week, so I called Samsung technical support. I spent over an hour on the phone with the Samsung technician and he finally gave up. He gave me a ticket number with instructions to ship my soundbar to a Samsung repair center that is located in New Jersey. He said that Samsung would repair the soundbar and ship it back to me.
Here's the real interesting part. Once my soundbar arrived at the repair center I received a call from Samsung saying that they would not repair my soundbar since it was purchased from one of their authorized (Walmart) resellers. I've only had this soundbar for six months and it's still under the manufactures warranty. I think that this is completely unfair since Samsung created this problem in the first place with their most recent software update. It shouldn't matter where I purchased the soundbar. Samsung should just honor the warranty and fix the box...
As it stands, I'm now waiting for my soundbar to be returned from Samsung so that I can ship it to Walmart's Allstate warranty center. I responded to your message today so that others with the same problem can avoid delays on getting their soundbar fixed. Just remember, if you didn't purchase your soundbar directly from Samsung they won't fix it. You will need to contact the store that you purchased it from.
I hope everyone that is affected by this catastrophe can get their soundbars fixed in a timely manner. Word of advice. Turn off automatic updates so that you can avoid a problem like this in the future. Take care. Brian
