About to start my 2nd Beomaster 4400 restoration - need tuner restring advice

10 replies
ST
Offline
Stephen Taylor
Bronze
Posted January 8, 2026 at 16:08 GMT
#1645357
Hi,

just had a quick look at the latest BM 4400 I've acquired.  Generally it looks OK but I've noticed that the tuner needs re-stringing.

The string is intact but no longer passes through the wheels/pulley.

I also notice there is a spring which was attached to something that has broken off.

Does anyone have expertise in this area and can offer advice?

It's the kind of mechanical fiddlyness that I know I'm terrible at, I do like to have a go though.

Thanks in advance!

Steve

A trawl of 4400 manuals has led me to believe that “Diagram (3955001)” and diagram “Dial cord (6271101)” are missing - if anyone has a complete manual I would be extremely grateful - cheers!

 
ST
Offline
Stephen Taylor
Bronze
Posted January 10, 2026 at 15:47 GMT
#1672448
Found this on here, not sure how I missed it before - sounds pretty reasonable:

Take off the top cover, the tuning slider has some pins glued to the tuning string, probably the glue let loose or the pins are broken, or worst case the string is broken, If the string is broken, you will need a new one, If not, tune in to a known station, set the slider exactly to the stations Mhz, with epoxy or a strong glue attach the slider to the string.

 
HC
Online
hcraig244
Silver
Posted January 12, 2026 at 08:15 GMT
#1672461
I thought there was a manual in  the products section for the 4400....however when I look I can no longer find it? as I recall it gives the details required to replace the tuner string, I think I have one somewhere and will have a look for you.

Craig
ST
Offline
Stephen Taylor
Bronze
Posted January 13, 2026 at 15:33 GMT
#1672473
Hi Craig,

thanks for the message - would be super-grateful if you can find it.

Cheers!

Steve
Guy
Online
Guy
GoldModerator
Posted January 13, 2026 at 20:16 GMT
#1672474
I found a copy of the service manual on the Kose trading site (hopefully attached below), but it should be on Beoworld also - I will check with Multicare.
Attachments (1)

Location: Warwickshire, UK

My B&O Icons:

BeoCenter-9500.png BeoCenter-9500.png
Beoremote-Beo4.png Beoremote-Beo4.png
Beovision-10.png Beovision-10.png
Beotime.png Beotime.png
Beosound.png Beosound.png
Beosound-Explore.png Beosound-Explore.png
Beosound-Essence.png Beosound-Essence.png
Beoplay-P2.png Beoplay-P2.png
Beoplay-M3.png Beoplay-M3.png
Beoplay-H4.png Beoplay-H4.png
Beoplay-H3.png Beoplay-H3.png
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Beoplay-A2.png Beoplay-A2.png
Guy
Online
Guy
GoldModerator
Posted January 19, 2026 at 16:55 GMT
#1672540
Multicare have now added the BM4401 service manual to Beoworld, and it can be found at the foot of this page:  

Location: Warwickshire, UK

My B&O Icons:

BeoCenter-9500.png BeoCenter-9500.png
Beoremote-Beo4.png Beoremote-Beo4.png
Beovision-10.png Beovision-10.png
Beotime.png Beotime.png
Beosound.png Beosound.png
Beosound-Explore.png Beosound-Explore.png
Beosound-Essence.png Beosound-Essence.png
Beoplay-P2.png Beoplay-P2.png
Beoplay-M3.png Beoplay-M3.png
Beoplay-H4.png Beoplay-H4.png
Beoplay-H3.png Beoplay-H3.png
Beoplay-Form-2i.png Beoplay-Form-2i.png
Beoplay-Earset.png Beoplay-Earset.png
Beoplay-A2.png Beoplay-A2.png
HC
Online
hcraig244
Silver
Posted January 21, 2026 at 08:44 GMT
#1672554
Looking in the manual posted it doesn't detail the cord arrangements for the unit, if you require any pictures let me know and I will post some in here.....I read the description in the products section or the 4400 and the mention of the 4401 which was described as having almost mythical status....this is a picture I posted 10yrs ago showing a 4400 I was restoring back then alongside a 4401 which was loaned to me for a while for a comparison between the two by founder member Peter.....who still posts here occasionally.



Peter knows of two that exist.....this one and another which may have been sold to someone in Portugal as I recall.
ST
Offline
Stephen Taylor
Bronze
Posted January 31, 2026 at 00:23 GMT
#1672640
Thanks very much for the updates.  I've got a few beomasters and beocenters of similar vintage so I'm going to use those as a reference although the wheel in those are mounted horizontally not vertically.  The best manual I've found is on the radio museum but I don't have enough points earned yet to download it.  If I get a better one I'll upload it here.

Thanks again!

Steve
ST
Offline
Stephen Taylor
Bronze
Posted February 13, 2026 at 11:38 GMT
#1672759
Finally fixed it - it's similar to the arrangement in a 4000 except in a 4400 the wheel is vertically mounted so used that as a reference.

The anchor on the wheel for the spring had broken.  I added a brass post and secured it in place with kiwkplastic+epoxy seal - seems very strong and works with no issues.

When I was re-stringing, the cord broke.   Fixing this was not fun and required a lot of tweaking and re-stringing in order to get the correct tension.  I would not look forward to doing it again!

Thanks for again for the comments, I really appreciate the help.

Steve
DI
Offline
Dillen
BronzeModeratorFounder
Posted February 20, 2026 at 13:05 GMT
#1672853
I know of another two Beomaster 4401.
Both natural alu color. Not black.

Martin
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