Just bought from a dear US Beoworld member an AV7000 surround decoder.

I was under the assumption that I had a schematic diagram to change the unit from 110V to 230 Vac internally.

But unfortunately I don't and can't find it here either!

Somebody here who has this unit and did this kind of modification? I know I have to ad or remove a link(s) on the transformer and change some fuse(s) to another (lower) rate.

Thanks! Leslie

Moderator,

Can you please move this post to the workbench?

Thanks for your help! Leslie 

Maybe this will help?

The transformer has 2 primary coils, in 110V units they are used parallel, in 220V units seriell.

Post a better picture of the details on the second picture, cant see it right... 

Okay, here it is...

There are 4 fuses that probably has to be replaced, but which one and what rate(s)?

Thanks for your help!

@Die Bogener,

Kanst du mich bitte weiter helfen?

Leslie

I would try this way....

Remove the wires between the coils and make the new green one. Move the black power line to the lower coil, at 220V

The coils were parallel in 110V, now they must be seriell for 220V.

Great! Thank you very much "Die Bogener".

Can I leave the rating values of the fuses as it is?

There are 2 pairs. I reckon that one of the pairs are used for the incoming AC power? But which one?

The fuse must be changed to a 50% lower rating.

Which one to change? Try a multimeter? Must be connected to the red/black power cables. It's just 1 fuse in the primary circuit that should be changed, all other secondary fuses stay the same.