ARCHIVED FORUM -- March 2012 to February 2022READ ONLY FORUM
This is the second Archived Forum which was active between 1st March 2012 and 23rd February 2022
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
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
Replace capacitors on the power supplier regulator module.
Martin
many thanks Martin,
as usual, you hit the nail on its head
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
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
can you spot the slight modification ??
cheers ALF
I did spot the difference, looks nice!
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
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.
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.
I seem to remember it has a muting system when switching sound source (to avoid pop sounds), perhaps this is wherethe 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.