Thanks for posting and welcome to the Bose Community. I am deeply sorry to hear that you have no power with your SoundTouch 300 Soundbar and would love to assist you further.
Firstly, I would recommend that you try plugging the Soundbar into another power outlet to ensure that the issue isn't with this particular outlet. I would also highly recommend that you attempt to perform a reset on the Soundbar 300 by:
Can you please let us know if you see any LED's on the system to see if it is receiving any power at all?
I look forward to hearing back from you regarding these steps!
Hector B - Community Support
I’m extremely disappointed that as a Bose consumer and spending a $1,000 for this system at Costco in January 2018, I haven’t received any communication from Bose on this issue. It’s clearly not an isolated issue after reading this communication forum. You would expect more from a company that traditionally has a great reputation. The fact that I have to completely replace a sound bar system after just 22 months is ridiculous. I would expect more from Bose. Thank God that I purchased it at Costco and kept my receipt. I plan to get my refund and invest in a different company. It’s truly unfortunate because I had such high expectations of Bose. While it worked it was a fantastic product. However, I was truly disappointed that it just completely stopped working. I was even more disappointed when I found out that this was a common issue and read about all of the complications that consumers had to go through. Perhaps I’ll try Sonos this time around.