Beolab 5000 - Low output on one channel

7 replies
B(
Offline
bugge (archived2)
Bronze
Posted December 16, 2012 at 22:02 GMT
#2195646

Hi,

I have had a Beolab 5000 for some months now, but haven't had time to test and restore it properly until now. Too much studying 😎 also I have been working on recapping a couple of beovox 2400 speakers. Anyways, I just tested the beolab 5000 a couple of days ago, and to my dismay I noticed that the right channel had a much lower output then the left one 🙁

Other things I noticed:

  • There is a crackling sound on the right channel  when I turn it on and off
  • If i turn the volume up and down alot it will suddenly work, eg the right channel will be on the same level as the left
  • I have swapped the speakers around and tried different input types, and the problem is always on the right channel

Do any of you know what can cause this? I am guessing I got a faulty capacitor somewhere... Is this something I can locate and fix myself?

I hope someone can help me solve this.

Thanks

Peter
Offline
Peter
Gold
Posted December 16, 2012 at 22:10 GMT
#2195647

If it suddenly works, it sounds more like a cracked solder joint - a duff capacitor would seem less likely.

My B&O Icons:

BeoCenter-9500.png BeoCenter-9500.png
Beoremote-Beo4.png Beoremote-Beo4.png
Beovox.png Beovox.png
Beovision-11.png Beovision-11.png
Beotime.png Beotime.png
Beosound-Stage.png Beosound-Stage.png
Beosound-Moment.png Beosound-Moment.png
Beosound-5.png Beosound-5.png
Beosound-2.png Beosound-2.png
Beoremote-One.png Beoremote-One.png
Beoplay-Portal.png Beoplay-Portal.png
Beoplay-Earset.png Beoplay-Earset.png
Beomaster.png Beomaster.png
Beolit.png Beolit.png
Beogram-400x.png Beogram-400x.png
Beocenter-2.png Beocenter-2.png
B(
Offline
bugge (archived2)
Bronze
Posted December 16, 2012 at 22:44 GMT
#2195648

Ok, I will try to look for that. I will update if I find anything

C(
Offline
chartz (archived2)
Bronze
Posted December 17, 2012 at 08:59 GMT
#2195649

Hi,

Yes, a bad solder joint or a defective (dirty?) potentiometer. And don't forget that there are other ones underneath, which could also be problematic!

Don't forget the photos! We love 'em here!

Good luck on your Beolab, you'll see (hear) it's an excellent integrated.

B(
Offline
bugge (archived2)
Bronze
Posted December 19, 2012 at 23:08 GMT
#2195650

Thanks for the help!

After a lot of cleaning (and it was way more dust and dirt than I believed 😎) and a couple of resoldered joints I think its back in working order. I'm not certain which of the two did the trick, but at least it sounds good now. I will have to do some more testing, but I think it's fine.

I will upload some pictures tomorrow 😕

C(
Offline
chartz (archived2)
Bronze
Posted December 20, 2012 at 06:20 GMT
#2195651

Great! Well done!

Now what do you think of its sound quality in absolute terms?

I am looking forward to the photos!

B(
Offline
bugge (archived2)
Bronze
Posted December 20, 2012 at 20:41 GMT
#2195652

Thanks, but I think I was a bit lucky. I just gave it a thorough cleaning inside and when i did I found a couple of connections that looked to have had a hard time. So I checked the components in those areas (found nothing wrong) and resoldered the joints. After that i just turned it on and it worked 😁

I have been playing it all day with my beogram 1202 and a pair of beovox 2400 and beovox 2500 and i totally love it. Both the sound and the way it looks are just stunning!

Sorry to disappoint you about the pictures, but her in Norway it gets dark very early (around 2pm) and I was unable to get good pictures (need good light or my miserable camera will produce lousy pictures) because I was busy all morning and the afternoon. I will try again tomorrow 😕

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