Beovision AV9000 installation

[Sergi0]

Hi,

I bought a Beovision AV9000 that is in excellent condition. The previous seller was a collector and took a lot of care in his units. The TV was professionally dismantle from the VCR/sound part, very well packed and stocked.

I remove the packaging to test the unit. I download the installation manual but I wanted some feedback in installing the TV on the sound system. Do I need to just “put” it on top of the sound system and use simultanously the 2 levers as I the reference manual ? Are there any guide to be sure to be corretly aligned ?

Are there 2 different color model for this Beovision ? Mine does seem to have a darker blue than the pictures I found on the Internet.

Last but not least, is there a way to clean the aluminium stand ? It has some marks and could benefit from the right cleaning.

Very kind regards,

Sergio

 

 

[Sergi0]

I was able to do it almost alone (the bigbosswifey helps me targeting the holes when I was moving the TV). It was heavy but I did it and it fits perfectly. It was a breeze to secure by pushing the 2 handles simultanously.

The TV is working, at least in got the picture. I am able to play with the menu. I need to plug a console to test it. I notice a buzzing sound that seems to come out of the back of the TV. It stop when I remove the plug. What could it be ?

[Sergi0]

[Sergi0]

[Sergi0]

the buzzing sound is quite annoying. It doesn’t seem to come from the speaker, but from the bottom of the TV. I will remove back cover and try to locate the origin of the sound.

I got the service manual from the site but the scan is not very good and the list of mechanical parts is unreadable. I can do a high res scan if someone send me the manual 🙂

[Madskp]

The manual library on site is not yet fully updated. But if you contact @multicare I am sure Mark will look if any other AV9000 documents are available

Also I recently found a servicemanual on Archive.org that among a lot of MCL2 link equipment also cover the Audiokit for AV9000.

 

Location: Denmark

[Sergi0]

I open the TV and did a cleaning of the dust. Not too much as I did not wanted to damage something.

I read a lot about THT discharge and thought it might be the origin of the buzzing sound, but it is not. I did discharge it, clean everything and put back a slight touch of specific grease.

I made a video and the sound seems to come from the bottom where there are a coil or something like that. Here is a video (link only available for 2 days) : https://streamable.com/9yuifk

Did anyone have an idea of the origin of the sound ? And a way to mitigate it ?

Cheers,

S.

[Madskp]

Madskp wrote:

Also I recently found a servicemanual on Archive.org that among a lot of MCL2 link equipment also cover the Audiokit for AV9000.

Here is a direct link for the servicemanual on archive.org https://ia904506.us.archive.org/11/items/manual_MCL2AV_SM_BANGOLUFSEN_EN/MCL2AV_SM_BANGOLUFSEN_EN.pdf

It describes how the Audiokit should be setup in regards of option settings

Location: Denmark

[Sergi0]

the location of the sound seems to come from the part in the picture. I touch it using a plastic handle and I felt the vibration. I did not felt it elsewhere.

Is that something that can be repaired ? How ?

Cheers,

S

 

[Madskp]

Hello Sergio. I have tried contacting you a couple of times through the private message function regarding sending the package with the Audiokit for the AV 9000. So in case you haven’t got any notifications about these messages here is a heads up.

Location: Denmark

[pepps]

Hi Sergi0,

I there any chance something wasn’t seated perfectly when you assembled the screen and speaker?

Have the two elements been unjoined and reconnected since you first rebuilt it?

Julian

Location: Kent, UK
Favourite Product: Beosystem 6500
My B&O Icons:

[Sergi0]

Hi julian,

I did check but it wasn’t that. I was able ro remove the part in picture and test it by directly powering it. the noise come from the transformers. I tried to find the same one but of course, it was not available.

I am trying to find the correct technical reference (220v in and 2x16v out – but I have no clue for the current) to replace it with a more modern one. That should be too complicated because I am working with an old school electronician.

cheers,

S.

[Sergi0]

I keep the thread open, that might be usefull for other.

I am going to the varnish solution right now. I read about it and it can’t get worse doing so. I will unsolder the tranformer and immerge it in specific varnish. I will do that in a box where I can pump air to create a pressure for the varnish to get everywhere.

I’ll post more details when I start the procedure !

[Madskp]

If that does not work it might be an idea to look into if similar parts can be found in a TV from the MX series. These might be easier to find than an extra AV9000

Location: Denmark

[Sergi0]

Hi everyone,

I did repair the transfo. I used varnish 4226A. I follow chatGPT recommandation for its usage (gloves, etc…) and do it outside. I spray mutliple layer directly on the transfo. I remove it from the electronic PCB (desoldering). I let it dry for 96 hours and reinstall it. The vibration was gone, absolutely no sound anymore.

I can confirm that varnishing the transfo did work for me !

[Sergi0]

I put the transfo on a stacking system inside a tupperware. I spray on every side, wainting a little bit between spray. To dry it, I use another tuperware with padding absorber (like tissue) under the transfo. That helps me move it from outside to my cave. That wasn’t as difficult as I thought, in fact it was super easy. The most difficult part was to do it outside as I live in an appartment…

[Madskp]

Nice that you found a solution for the vibration issue 🙂

Hope you can enjoy this beautiful tv now. I remember looking at the catalogs back in the day and using countless hours looking at the pages with the AV9000 setup with the Beolab 8000 and 6000.

Location: Denmark

[pepps]

This is a great update! I too remember oggling the AV9000 and trying imagine what films might sound like – I never had the pleasure of hearing a Pro-Logic surround sound film on one since.
Enjoy it @Sergi0 🙌

Location: Kent, UK
Favourite Product: Beosystem 6500
My B&O Icons:

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