Beovision AV9000 installation

18 replies
pepps
Offline
pepps
GoldModerator
Posted April 14, 2025 at 14:21 GMT
#1669522
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

My B&O Icons:

Beovision-Avant.png Beovision-Avant.png
Beoplay-H95.png Beoplay-H95.png
Beoplay-E4.png Beoplay-E4.png
Beomaster.png Beomaster.png
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Beofan for many years with a penchant for 1990s audio systems.
SE
Offline
Sergi0
Bronze
Posted April 14, 2025 at 21:23 GMT
#1669527
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.
SE
Offline
Sergi0
Bronze
Posted May 1, 2025 at 17:50 GMT
#1669680
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 !
MA
Offline
Madskp
Gold
Posted May 1, 2025 at 20:31 GMT
#1669683
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

SE
Offline
Sergi0
Bronze
Posted August 10, 2025 at 09:05 GMT
#1670670
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 !
SE
Offline
Sergi0
Bronze
Posted August 10, 2025 at 09:08 GMT
#1670671
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...
MA
Offline
Madskp
Gold
Posted August 10, 2025 at 15:16 GMT
#1670677
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
Offline
pepps
GoldModerator
Posted August 10, 2025 at 16:38 GMT
#1670679
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

My B&O Icons:

Beovision-Avant.png Beovision-Avant.png
Beoplay-H95.png Beoplay-H95.png
Beoplay-E4.png Beoplay-E4.png
Beomaster.png Beomaster.png
BeoCenter-9500.png BeoCenter-9500.png
Beofan for many years with a penchant for 1990s audio systems.
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