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BL4 directly plugged on the motherboard. Good enough for computer, and no need to add another devices to use them via line-in.

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La liste n’est plus a mise a jour, tu as des radio qui n’emettent plus, mais il y a en a qui fonctionne encore; Je suis en train d’ecouter une radio rock pendant que j’ecris ces lignes.

Il doit etre possible de modifier cette liste, mais il faudrait pouvoir se connecter sur la BS5 directement. Un serveur SSH tourne sur le port 909 de memoire. C’est un dropbear sshd 0.49. La version n’est pas recente et n’est pas a jour des patch de securite. Avec un peu de travail, il doit etre possible de bypasser l’authentification SSH et d’avoir acces au FS du BS5 pour modifier ces listes.

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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 !

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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.

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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

 

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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.

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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 🙂

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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 ?

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I found my answer and thought it could be usefull for people.

Accessing counters is not possible without specific B&O equipment.

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Hi,

I get the board from SkynexAV. I had to provide my Avant serial number for the new board to be compatible, but once I received it, I was able to remove the backplate of the TV and change the board.

It is a couple of screws and connector to remove and replace. Being patient and taking pictures may help. Once it was installed, I don’t remember if I had to enter a new PIN code, but as the TV is still working, I might have done it.

Cheers,

Sergio

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I did change the video engine myself after the reference for the faulty one were provided. I get a new board (might be a refactored one) and it took me around 30mn to install the bew board in the TV. It is not a complicated operation to do, as long as you have the service manual and the right screwdriver 🙂

S.

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I am always open to learn. the gap is going to be big as I went directly into computer science and the electronics I learn wheren’t practical… But why not !

I took a couple of pictures on the back without the plastic case :

I did not notice an exploded capacitor or something that look deficient (aka burn or something), but my skills are low. Dust, I saw a lot of dust… 😉

Anything to look in particular ? I can also buy a working one and switch parts. This one is in very good cosmetic condition and I was looking for a grey one. The black one is more common to find around Paris.

S.

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By any luck, do anyone know someone in Paris (France) area able to repair TV CRT ? I search a little bit with Google but no luck so far. CRT technicians are probably all retired… ;).

S.

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Thanks a lot Martin ! That is helpfull. If I understand correctly, it can explode if I power it again ?

Do you have and idea of the root cause of this problem ? Is the moving of the TV a probable one ?

S.

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Thanks !

I won’t be alone (not that strong ?) but i was wondering if it needed to be face down/up or on the side.

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