Vintage Products

Re: Beomaster 900 Stereo ALL Transistor Aerial

Dillen — Tue, 05 Oct 2010 15:05:25 GMT

Suitable "rabbit ears" aerials were available.
Rare to find today.

Martin

Re: Beomaster 900 Stereo ALL Transistor Aerial

Dillen — Tue, 05 Oct 2010 14:51:16 GMT

Well, that depends on how skilled you are with electronics.
I would check the second AF transistor as the first thing.
- Then the first as the second - (err.. did that make sense ?)
Or simply replace both. BF450 is a good substitute (Yes, I know it's a silicium device but it works
fine in this position).
The original AF 116/117 tend to develop internal shorts.
Of course, there could be something else wrong in your Beomaster but it's a common fault.
If you are not good with electronics, try to find a helpful Beoworld'er near you.
I'm in Denmark.

Martin

Re: Beomaster 900 Stereo ALL Transistor Aerial

bibilapetite — Tue, 05 Oct 2010 14:16:10 GMT

Sure is. Is there anything I can do?

Re: Beomaster 900 Stereo ALL Transistor Aerial

Dillen — Tue, 05 Oct 2010 14:11:31 GMT

Sounds like a dead AF transistor.
Is it dead on all wavebands ?

Martin

Re: Beomaster 900 Stereo ALL Transistor Aerial

bibilapetite — Tue, 05 Oct 2010 13:48:05 GMT

Right. I was done.

So my radio doesn't work. It makes a sound as if it's trying to tune but then it doesn't work. On some frequency a get a kind of sound bump (different from the crackling sound) but basically it doesn't make any good noises. Should I sell out and sell it on or is there a way to fix this kind of problem?

Thanks again!

Brigitte

Re: Beomaster 900 Stereo ALL Transistor Aerial

bibilapetite — Mon, 27 Sep 2010 08:53:01 GMT

Legend. I am going to check it tonight. I really think that I don't have that wire as in the picture but I'll know for sure by tomorrow. Thanks!

Re: Beomaster 900 Stereo ALL Transistor Aerial

tournedos — Mon, 27 Sep 2010 07:43:07 GMT

Welcome to the forums and congratulations on a nice radio! That was my first piece of B&O

I'm currently composing an antenna FAQ but it won't be ready for a while, so here goes... these Beomasters actually have an FM aerial built it, but it looks a bit like an afterthought with the wires and the plug dangling out from between the case - and the actual plug is often missing. See the pic, that's how the plug should look like, and it should go into the red connector (you may have a late version where the connectors are a bit more modern, let us know if that is the case).

I'm afraid you can't buy these plugs anywhere, so unless somebody has one lying around, you'll need to think of something else. This kind of socket will actually take regular 4mm banana plugs that are still often used for (non-B&O) speakers.

For testing, you can just take a couple (or even one) of ~1 m pieces of wire, strip one end and fix it in the socket with whatever means you can (with a small piece of cardboard, rolled up paper, or something) and lay them out on the wall behind the radio. It won't be any worse than the internal antenna would've been.

The AM antenna is a different story if you need that.

Beomaster 900 Stereo ALL Transistor Aerial

bibilapetite — Mon, 27 Sep 2010 07:00:12 GMT

Hi!

I just bought a Beomaster 900 with integrated speakers. It is missing an aerial. Does anyone on here know where I can get one or if there is another fix?

Thanks in advance!

Brigitte