Christian Christensen wrote:

Yes you may dear Dillen.

It is obvious that it is very tight in the Beloab. 🙂
I cant see  how a 1000 uF would fit inside there.

So if you stick to that theory and method of restoration, you will "upgrade" all caps to the maximum possible value you can
physically fit, safely assuming that's what B&O did?

The engineers at B&O wouldn't design something to work best with 1000uF and then accept to only fit
400uF because "There wasn't room for more".
Not anywhere.  - Let alone in a top-range amplifier like this.

WD40 not in a B&O but in a Pioneer, that makes sense...

:-)

Martin

The original 400uF was already well dimensioned - as the far majority of components in there are.
That's also why these beasts work well and live long.

It's your restoration and you can mount what makes you feel happy, but don't blindly up capacitor values in the
name of improvement and do keep in mind, that something happens to f.e. the rush-in current when you up the
filter capacitor (- and particularly if you fit a low-ESR type capacitor, which seems to be an often misunderstood method of "upgrading").
The increased load and stress on the rectifier diodes, the voltage regulators and the surge-limiting resistors may
or may not result in problems sooner or later. I recommend you don't just up capacitors without a good reason.

Martin

- And if you replace the rectifier diodes with Schottky types, I will be writing again! :-)

Martin

Not that I had any idea of replacing the rectifier....Hmm is is selen recitifer in it ?

Ahhhh now I understand what you were trying to say ;), got confused for a bit. :)

This thread will go in pause for  a week or two.
Have so many other units for other people that come in for repair.
It started with showing my own B&O repair/refurb on a vintage hifi  forum.

Since I started this hobby 3 years ago I have had about 20-30  repairs of other brands. :)
Nikko, Sansui, Technics, Tandberg aso. I have very little time for my own beloved B&O stuff nowdays....  😕