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Beomaster 2200 dead ??

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ALF
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ALF posted on Fri, Jul 8 2016 12:38 PM

Hi  everyone,

Again in desperate need of help having taken over a nice looking Beomaster2200.

The BM gets power but no sound - no output ????

Naturally checked all 4 fuses. - all good but where from here ??

Tested tape, phono, am, fm......just silence ?

Is it worth following up or just dump it is another question ? It seems quite challenging taking the BM apart.

Looking forward to read some supporting tips. :-)

Cheers - ALF

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Craig
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Craig replied on Fri, Jul 8 2016 12:46 PM

Alf

One should never dump B&O.......plenty of people here will provide advice on preliminary checks you can make as a starter for 10

Dillen
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Replace capacitors on the power supplier regulator module.

Martin

ALF
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ALF replied on Mon, Jul 11 2016 8:51 AM

many thanks Martin,

as usual, you hit the nail on its head  Big Smile

a 4 cap change as suggested brought it back to life.

I left the two 5000uF ones untouched for now as I may change all electrolytic caps

at a later stage - so far it is working nicely !

the only other thing I changed were those wood-trim panel - they are now brushed Aluminium,

which looks much nicer.

cheers

ALF

ALF
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just a brief impression of a wonderful sounding BM - with PSU recapped and balance-slider repaired - thanks Martin !

I wonder if my hearing is deserting me but this BM2200 amp sounds so unbelievably "analog" - way better than my BM1600, 1700 and even 7000 -

no excuses Yes - thumbs up

can you spot the slight modification ??

cheers ALF

 


marc
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marc replied on Thu, Dec 29 2016 7:47 AM

I did spot the difference, looks nice!

Lewis T
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Hi Martin,

 

I'm having the same issue with mine have done this, caps on amp boards and the smoothing capacitors and I still have no sound. I was wondering if there is anything else it could be? When you power up you get a power up noise from the speakers.

 

Kind Regards,

Lewis

Dillen
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Dillen replied on Wed, Feb 21 2018 8:25 PM

Did you replace the capacitors on the regulator board?
- And I am not referring to the two large cans held in the metal bracket, I mean the ones ON the underlying board.

Martin

Lewis T
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Hi Martin,

 

Yeah I have done the ones on the board underneath and still it's doing nothing, is there anything else I can have a look at to see if that's  causing it.

 

Kind Regards,

Lewis

Dillen
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Dillen replied on Thu, Feb 22 2018 8:21 AM

I seem to remember it has a muting system when switching sound source (to avoid pop sounds), perhaps this is where
the problem is. 
Connect a signal generator to the tape input and put a scope to the signal path to see where the signal gets lost. 

Martin

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