Hi , that is a problem with buying stuff unseen(unheard). On the positive side it sounds like it is in great cosmetic condition and it can be fixed.

Dillen on this site can supply you a full replacement kit of what usually needs replacing. With kit this old there can be other issues that need teasing out but you would need to be confident you can do all the soldering before starting.

keep us posted on your progress.

It sounds like fried output transistors in one channel which is very common with these. I have experienced 3 Beomaster 4400's with the problem you are describing 🙂

It's an inexpensive fix, the output transistors are still widely available.

If the headphones sound fine, the problem will have to be
in the speaker switches and/or sockets (or the speakers).

Martin

I too would bet on switches! Quite a lot of work ahead... Please don't use those awful contact sprays! It will possibly seem to work but in fact the silver contacts will have blackened and NO snake oil product can return them to their neat and shiny original condition.

Are you sure you fully engaged the phones plug, ie not listening in mono?

Yes, with the headphone it sounds fine on both channels. I have tried different speakers, cables, mono, stereo, both speaker output (1 and 2). Still no change, the sound from the right speaker output sounds bad. The left one sounds as clear as it should.

I carefully opened it just to see if something had come lose (during the transport). All wiring looks untouched and nothing lose, black or burnt.

Despite the problem, I have to say that it looks very nice to look at. But it would be more fun if it works.

So right now I am sitting and listening to my Beocenter 7700 and looking at the Beomaster 4400. Hm.😮

Is it easy to change a speaker channel switch and the socket?  Do I still need to recap the whole thing?  

Many thanks for your advice,

Dan

Yes, with the headphone it sounds fine on both channels. I have tried different speakers, cables, mono, stereo, both speaker output (1 and 2). Still no change, the sound from the right speaker output sounds bad. The left one sounds as clear as it should.

I carefully opened it just to see if something had come lose (during the transport). All wiring looks untouched and nothing lose, black or burnt.

Despite the problem, I have to say that it looks very nice to look at. But it would be more fun if it works.

So right now I am sitting and listening to my Beocenter 7700 and looking at the Beomaster 4400. Hm.😮

Is it easy to change a speaker channel switch and the socket?  Do I still need to recap the whole thing?  

Many thanks for your advice,

Dan

edit

Graham, there is no muting switch/relay on the 4400!

chartz wrote:

Graham, there is no muting switch/relay on the 4400!