My Theater Matrix 9901 remote just quit. Harmony said no

My Theater Matrix 9901 remote just quit. Harmony said no

Had this Theater Matrix 5.1 with power sub for 5 years now. What quality but now I cannot get the remote to do anything. some times i would have to take out bateries and replace and the unit worked. Now nothing Remotes .com helped me in a way to check the remote with android cell phone it is the remote. Open to ideas or where to send as I cannot even get the pronto hex code as this company is out of biz.

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