Here's an update. After the replacement 5805 Levinson amp had the same malfunctions, my dealer/person (with decades of experience) realized that Levinson's firmware update was too large (v1.41 to v1.47 when my my two units were v1.38). He speculated Levinson's updates left out something needed to go from v1.38 to v1.41 and then to v1.47. So, he got Levinson to email him v1.41, he reinstalled it on my returned amp, then updated it to v1.47 and the malfunctions went away. However, when we tried to do the same thing with my replacement 5805, it wouldn't allow it.
He kindly came to my house to try installing v 1.47 himself and we were surprised that Levinson had created update v1.48 within the last 24 hours, and, it fixed the malfunctions I'd experienced. However, after playing it for several hours, the amp locked up while on and playing music, and could not be controlled with the remote or from the front of the amp. So, no_money, you might want to be on the lookout for this.
Thank you all for your replies and suggestions! Much appreciated.
He kindly came to my house to try installing v 1.47 himself and we were surprised that Levinson had created update v1.48 within the last 24 hours, and, it fixed the malfunctions I'd experienced. However, after playing it for several hours, the amp locked up while on and playing music, and could not be controlled with the remote or from the front of the amp. So, no_money, you might want to be on the lookout for this.
Thank you all for your replies and suggestions! Much appreciated.