How can IO down load a Manual for Bose AV48 Media Centre?

Hello Eugene

Here is your replacement remote.

https://www.google.com/search?q=bose+321+series+ii+replacement+remote

Amazon

Bose 321 Remote

Amazon.com https://www.amazon.com > bose-321-remote > k=bose...

Replacement Remote 289138001 Compatible for Bose 321 Series I Audio/Video AV Receiver [Work with Series I of Bose 321 ONLY] (Instruction Included). Infrared.

I wrote this Tip on remotes!

https://www.fixya.com/support/r29872378-universal_remotes_no_facsimile_remote

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Yes you would be able to use a non bose amp. All the speakers should have crossovers in them, If you do start at a low volume first, you can blow your speakers if your amp is too big and volume is too high.

check hdmi setting from ur tv and ur dvd connection

I think that will be hard to do as I own an AV38 and there is no HDMI feature on my BOSE SYSTEM. I had to use the AV inlet. The AV48 DOES have the HDMI feature.( Unless you have a much later model AV38 that has the HDMI feature.

Not sure if this is the same problem, but I lost audio from the Stored, TV, Radio and my external speakers, but still had audio for the CD/DVD. I contacted Bose (Australia) support and they talked me through a solution that worked for me.
Remove the power cord from the Media centre, then while holding down the 'All Off' and 'Vol down' buttons on the Media Centre, reconnect the power (and continue to hold the buttons down). After 10 secs, release the buttons and turn the Media centre on. Everything worked fine for me after doing this.
Full marks to Bose for the phone support. I hope this helps someone else.

Did you select TV input on your AV38 Bose system and same thing for VCR. it should work unless from your TV audio if you watching HD signals some of the program had copy protection so it turn off the video and audio out at your TV output monitor that for TV
For VCR it must work make sure you select VCR input on your AV38
I hope that give some ideas

turn off the accoustimas, unplug the power code from the accoustimas and the media center and leave it for 15 sec. Then, plug the power code onto the accoustimas and turn it on. then plug the power code of the media center on. Turn media center on.

hope this helps

Just got off phone with Bose support with this very problem during install of a VS-2 software updtae to an older LS48 system. (Bose support personnel were very helpful on phone - and walked me through procedure to solve). I presume you unplugged and replugged power supply with no resolution. In that case, unplug power supply, wait 30 seconds and while holding down the "open/close button" and the "store" button (on media center) plug the power supply back in. Continue holding until the "Bose Lifestyle" message disappears. I presume this puts the system into a diagnostic mode, as the next steps in my case were to press and hold the "erase" button while scrolling through a menu of options using the "volume up" button. I believe it was the third "volume up" press that brought me to "FLASH" on the system screen. At that point I was told to release the "erase" button and press the enter button. The system rebooted and my VS-2 install went smoothly after that.
I'd recomend calling Bose support (800-905-2138) since your lockup occured during a CD load vs a software update (just to be on the safe side) - I was talking to a live tech support person in less than 15 seconds... a pleasant surprise.

When being in contact with BOSE support i got the message that "FAILED 802 Call Bose" refers to issues with the harddisk not being identified.
In my case I had to send the unit to BOSE support. I replaced the existing disk with an identical unformated one but some more actions are needed. The question is what .......