Re: Bruel & Kjaer 2206 Disassembly
Hello all.
Thanks for the replies - I should have thanked you earlier but had a bit of a 'domestic energency' that got in the way of a mere 'hobby' ...
Anyway - the cover did cone off - a slip of card around the socket helped ease the case over it.
Beautifully made inside but not the easiest to work on - I had a service manual but it was a little unreadable in places ... but that's part of the challenge.
Anyway, checked the various voltages and found an electrolytic had dead shorted pulling a supply rail down - not too surprised and it only goes to show they can fail even if they (presumably) haven't had too many hours on them. I replaced all 3 in the meter itself - the others are all tants and polystyrene so I left them alone - and it at least got the needle moving but rather erratically.
So, I dissembled the preamp nose section and found a 4th electrolytic that looked like it was leaking slightly - there was a slight bit of corrosion where it touched inside of the case.
Replaced that - and it all came good !
Thanks again to all who replied !!
W.
Just to add.
Martin - yes - that was exactly the problem. I really didn't want to even scratch the paint around the connector but, as I said, a small piece of card helped slip the case over.
David - yes - I was extremely careful when dismantling it - towel on the table, screws etc in small plastic tubs, and a little bit of thought before I did anything. I can understand why they're so expensive even now - it is beautifully built.
The final 'fix' was to give the case a going over with leather cleaner and light tan boot polish - I'll post a few pics when I have a chance !!
|