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Success Stories If you have successfully repaired or restored a piece of equipment, why not write up what you did and post details here. Particularly if it was interesting, unusual or challenging. PLEASE DO NOT POST REQUESTS FOR HELP HERE! |
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6th May 2020, 9:23 am | #1 |
Moderator
Join Date: Feb 2006
Location: Wembley, Middlesex
Posts: 7,225
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Beocentre 2002
This music centre came to me with a very loud hum on the RH channel, irrespective of the volume settings.
A check showed that the output IC was u/s, it's an SI1125H and they are no longer available. The music centre was a family heirloom and the owner wanted it repaired. The output stage is a separate module bolted to the heatsink which is fixed to the rear of the cabinet. I decided the best way forward would be to redesign the output stage using modern chips mounted on a new board. The IC I chose was the LM3886F (plastic package) The circuit boards were designed on Kicad and made in China. The system is on test at the moment and giving a good account of itself. And here it is: |
6th May 2020, 9:30 am | #2 |
Heptode
Join Date: Aug 2009
Location: Liverpool, Merseyside, UK.
Posts: 705
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Re: Beocentre 2002
Very neat and tidy, excellent work!
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6th May 2020, 10:00 am | #3 |
Moderator
Join Date: Mar 2012
Location: Fife, Scotland, UK.
Posts: 22,903
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Re: Beocentre 2002
Now that really is going the extra mile for a customer!
Superb. David
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Can't afford the volcanic island yet, but the plans for my monorail and the goons' uniforms are done |
6th May 2020, 10:21 am | #4 |
Dekatron
Join Date: Nov 2011
Location: Surrey, UK.
Posts: 4,400
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Re: Beocentre 2002
Very impressive Michael, puts the original standard of construction to shame. I hope that they are appreciative and that it continues to give good service for many years.
The sort of up-cycling that gets a hearty thumbs-up from me! Colin |
6th May 2020, 12:23 pm | #5 |
Moderator
Join Date: Mar 2012
Location: Fife, Scotland, UK.
Posts: 22,903
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Re: Beocentre 2002
There is a big difference between the standard of aeshetics on the outside of most B&O products and the standard of the electronics inside.
I'd rate the electronics as disappointing - must try harder. Though the 4000 turntable is OK. David
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Can't afford the volcanic island yet, but the plans for my monorail and the goons' uniforms are done |
6th May 2020, 2:42 pm | #6 |
Nonode
Join Date: May 2016
Location: Cornwall, UK.
Posts: 2,339
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Re: Beocentre 2002
I think they made most of their cheaper offerings in the Far East and some enthusiasts don't consider them 'proper' B&O. I got a BeoCentre 2200(?) from a charity shop in Sweden which I fixed up and gave to my brother. Nice to look at, but also plasticky inside!
I certainly wouldn't have the knowledge to rebuild an output stage. I applaud the work on show here, and hope I can work towards having that option in my arsenal if a repair requires it. We can all dream! |
7th May 2020, 6:36 pm | #7 |
Pentode
Join Date: Sep 2007
Location: Fareham, Hampshire, UK.
Posts: 106
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Re: Beocentre 2002
Glad you got it going Michael.
Andrew |
8th May 2020, 4:44 pm | #8 | |
Heptode
Join Date: Oct 2007
Location: Southampton, Hampshire, UK.
Posts: 824
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Re: Beocentre 2002
Quote:
They’re admittedly, still fair performers but you can do much better. |
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9th May 2020, 10:53 am | #9 |
Hexode
Join Date: Jul 2009
Location: Wokingham, Berkshire, UK.
Posts: 437
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Re: Beocentre 2002
I would second what Beobloke says.
All the B&O stuff I have had in for repair has been of excellent construction, top quality circuitry, and performed exceedingly well. I finally managed to lay my hands on a Beomaster 5000 FM tuner that I had lusted after for 40 odd years. I was not disappointed. I think B&O got a very unfair reputation for "not being HiFi' but those in the know new better John Last edited by John Caswell; 9th May 2020 at 10:54 am. Reason: typo |
9th May 2020, 2:58 pm | #10 |
Hexode
Join Date: Jul 2009
Location: Wokingham, Berkshire, UK.
Posts: 437
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Re: Beocentre 2002
Apparently spelling is not my strong point
"those in the know new better" Tut Tut. "those in the know knew better" I hang my head in shame, sorry teacher! John |