Hi There,

Just seen your post on the forum, these are lovely machines one of my Fav's and am a keen collector of these. It's worth saving as I have a few of these and they are wonderful and as they are 4 channel compatible aswell, they sound perfect with 4x S45 speakers.

Regarding the getting hot on the fins that means the output stage is being over driven hence getting hot I would Seriously recommend not using it until its repaired as it will go pop and most likely take your speakers out with it. I am talking from experience!

If you want to lube the sliders so they are smoother you can with some switch cleaner (I recommend Servisol super 10)  to get rid of any rubbish causing a bad connection then if no better or worse use a tiny drop of machine oil or silicone spray just pop it in the hole that the slider is running in then wizz up and down a few times to get it in the slider switch then that should sort it and wipe any excess off with a cloth.

It will need a full service to fix the the heat issue this happened to one of mine, its a good sign its working as it is and means its not to far gone to be repaired.

The FM dial can sometimes be fixed its usually a piece of plastic that's broken off on the mechanism that lives om the lid or the dial cord is snapped or it could even be the tuner itself has siezed up and this happens to its little brother the Beomaster 2000! (Also a lover of these).

The service manual wont be inside it as it dosent exist (to my knowledge) you have to use one from a 2000 if you need this please let me know and I will see about the one for the 3400, I have a user manual for the 3400 if this helps you at all?

The bulbs not working is also common this could be as simple as a blown bulb or it could be the circuit inside needs attention. I use a guy called Ron who is based in Wales he is amazing such a clever man with Many many years experience since the late 70's with B&O sets, He is a genius with these sets he's fixed mine and its just perfect I cannot praise him enough. If you would like his details please get in touch. 

Kindest Regards,

Lewis

Lewis T wrote:

If you want to lube the sliders so they are smoother you can with some switch cleaner (I recommend Servisol super 10)  to get rid of any rubbish causing a bad connection then if no better or worse use a tiny drop of machine oil or silicone spray just pop it in the hole that the slider is running in then wizz up and down a few times to get it in the slider switch then that should sort it and wipe any excess off with a cloth.

And that's not the hole in the top panel, where the knob with the window is, but rather the opening in the potentiometer itself.

Martin

Thank you Lewis and Martin for the replies! I really appreciate it. In the meantime I found a place (I'm in Warsaw, Poland) where they took it in for a complete general service -- I understand it will take time, and will be costly, but hopefully they will bring it back to its glory. One thing I wonder about if the SQ demodulator is OK and if not can they actually fix it. I'll just have to see. 

As for the manual I managed to find one on eBay in the Netherlands and bought it, shipped it to a family member who will scan it for me. 

If it turns out great I'll post some pictures. I would love to find a set of P45's for it, but I know this might be tricky. So far I managed to get 2 P30's.

As a side note, I seem to be populating this forum with questions about repairs, but its only because I fell for vintage B&O only recently, I do research for a living and I know a guy who has sells B&O in good condition. Not an easy combination...The cost of the repair of the 3400 might be sobering, but probably only for a while ;)

Ok, so below I attach some photos of the service manual for the BM3400 - it does exist, it is supposedly an addendum to the service manual for the BM2000 type 2801 (the BM3400 has type 2802).

part 2:

Ps. Of course these are taken with a phone, I'll try to get better scans -- if I do I can upload them for everyone to use.

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Martin

Sorry! Although just to clarify this is not a sales/wanted ad.

I bought the service manual for myself and I will gladly post copies for others to use. If I need a silver membership for it then I'll probably get it when I have better scans to upload.

Hi Everyone, 

so I have a good scan of the service manual for Beomaster 3400. I am happy to donate it to Beoworld's library and to anyone who would want a copy. The only thing is that I don't know how to attach a PDF file here. Also do I need silver membership for this? 

Best,

Piotr