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
One Beolab 4000 speaker needs replacement of an electronic board. (I knew because 11 years ago, the other speaker was out of order (no green light) and B&O service came and replaced an electronic board; shortly after this speaker went out of order; then I put them in storage without repairing).
I called B&O and found out the part is now about US$180. After labor, the repair would be about US$250. It doesn't make sense to spend so much on one speaker as it would be more economical to buy a functioning pair on ebay for a little bit more.
I am thinking of fixing it myself. Is that electronic board available from a non-B&O source?
The board is B&O specific.
But: just check the little standby transformer on this board. The transformer is defect, when there is no red or green light.
"The board is B&O specific": Do you mean only B&O has the part?
There is no green light and no sound. Supposing the transformer on the board isn't working, is a new transformer available from a non-B&O source?
Only B&O will supply this part. Or a collector... or a simple electronics shop.
The transformer is a quite normal standard part, nothing special. It produces after the rectifier diodes 23V DC and ~ 100-200mA, so whatever fits will work.
Partnumber 8013582 at B&O
8013595 for type 6639 (Japan?)
You have checked the fuse (63mA) ?
Thanks! I live in Hong Kong (220v)
Is 8013582 the part no. of the transformer or the whole board?
Don't forget to order a set of foam. It will be a bit sticky and messy inside the BL4000.
8013582: This is just the transformer.
Thanks!
11 years, the B&O man came to my home and replaced the board of the other speaker. If it were the transformer causing the problem, why would he replace the whole board instead of just the transformer?
rudyhung: Thanks! 11 years, the B&O man came to my home and replaced the board of the other speaker. If it were the transformer causing the problem, why would he replace the whole board instead of just the transformer?
That's very simple: Because those service technicians of today does not want to do any soldering. They only want to replace modules. It has been this way for years. If a CD player won't play the standard solution is: change the whole cd-mech - even if it often only is a question of changing a capacitor. If an active speaker is "dead" they change a module. And when the device is 10 years old, they say "Parts no longer available".
The transformer isn't on the board. So, swapping the board doesn't make sense (if it is the transformer).
That speaker went out of order (no green light and no sound) 11 years ago, shortly after the other speaker was repaired with a new board. (It appears the board is destined to fail in about 5-6 years (lack of longevity!) and B&O must know, but still chose to use mediocre components.)
Is the board available only from B&O?