Update:

• The stylus is new (Soundsmith SMMC20 EN)
• The lamp of the tracking arm and the photo control are glowing.

I tried to adjust the tracking arm's height at 19,5mm as explained in the service manual. I noticed that a small tap on the tracking arm starts the playback (I can see the , as if there is a focus issue with the sensor that is solved by the tap. But it has to be done for each disc and I fear that it will harm the tracking arm. What could I do to go further? Kind regards, Yann.

Hi,

Attached a new video with the issue and what happens when I tap slightly the chassis.

You can also note the carriage motor on the right of the video.

It stops moving at 13′ of the video and goes back after the tap. First rather fast, then by steps following the move of the reading arm.

Same issue with my 3 cartidges, so I doubt that the stylus are involved.

Tracking arm set at 19,5 mm from the aluminium part of the platter and tracking weight at 1,2 g.

So I wonder if something is mis-aligned in the carriage, but I don’t know how to remove it from the rails and would avoid to break anything.

May someone explain the process?

Kind regards,

Yann.

So today the new belts arrived from link so I could crack on with fixing the BS3000 doors.  The parts were only ordered on Thursday evening, so a great quick service, fully tracked with Royal Mail. But first I had to have a quick look at my grandson's Lightsabre - no prizes for guessing what was wrong with it ...

link

But first I had to have a quick look at my grandson’s Lightsabre – no prizes for guessing what was wrong with it …

I have repaired that same fault on several pieces of toys :-) Not great production quality

link

Tough luck. These Beosound 4’s does not seem to be as easy to work on as the BC2300/2500/BS Ouverture/BS 3×00 system

I agree - they're far too modern for my liking.

link

Looking in the servicemanual for the BS4 something about modules being registered to the BS4 when powered on for more than 12 hours or the Pin code being activated/deactivated which sounds like a lock in between the main PCB and the other components which could probably cause trouble if one module is malfunctioning.

Thanks @madskp I hadn't spotted the 12 hour comment!   Because I disconnected several ribbon cables when dismantling, I will power the unit up and leave it overnight in the hope that this may cause the modules to 're-register'.  I don't hold out much hope, but worth a try!

link

I’ll persist a bit longer, but to be honest I don’t like working on it!  Those pull-out ribbon cables are very tricky, and the very sticky outer case leaves black marks all over your hands (and workbench) when handling it.

I had the same feeling when I was working on one of these.

I’m busy working over 6 Penta 3s and 2 Penta 2s that are all having new foams and full cap sets. Also I have been replacing some trim to keep them looking great. Bits I am in the process of:-

1. Replace the rear trim strips that normally come off and distort.  I had to get these made as couldn’t find any for sale. I will have some left over at the end if anyone is desperate for them.

2. Repairing a cut inner amp plug that was snipped off for some reason.

3. Making up the odd mid range speaker leads that were missing.

4. Lots of polishing and the odd bit of plastic repair.

5. Replacing the mirror base on two although I still need a couple more to be a perfectionist if anyone knows of some for sale?

 

6. Replace switch panel door as the locking rang has broken off one. Still need that if there is one anywhere.

Another question do the Penta displays work when plugged into a BC9300. I have fully wired leads and they do work on the TV but not with my 9300. Is that a fault?

cheers

Nick

Please Help

Hi, I just bought a Beocenter 9000. Was able to fix all the problems it had except one. On the first several tracks of CD (higher speed) there is a whistling noise coming from the motor, then starting from track #4 it runs OK. Any thoughts how to fix this. Thanks

Madskp, I'll give that a go.  I also note that I have an issue with the left speaker chanel output not working or very quiet so It may all be connected.  After reading a few posts and s the BC is a bit old it may be plug/board issues or maybe a relay problem.  I need to replace the battery so will have an explore then.

Nick