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
I've had a pair of Beolab 9s for a long time. One of them has now gone silent with the green led lit. I've isolated the fault to the Beolab 9, and perusal of the online service manual indicates that module 999 (amplifier) nees replacing. The service manual also indicates that module 999 contains a fuse. So I have a simple question. Could the problem be a blown fuse, or would the led have stayed red in this case?
Hi Nick,
Welcome to beoworld.
Firstly, assuming they are connected to a B&O device with powerlink cables, have you checked that the LEFT/RIGHT/LINE switch hasn't accidently been knocked into the 'line' position? I'm assuming you've probably checked and gone past this stage given you're already delving into the service manuals but it's always worth checking the simple stuff first
I can't answer your question regarding the fuse, as I've not had cause yet (touch wood!) to open my BL9s but if the fuse is on the module which the service manual is suggesting requires replacement then it would certainly be worth checking the current fuse.
I assume your Lab 9s are over 3 years old and therefore out of warranty?
Kind Regards,
Martin.
Thanks Martin,
No, I'm not connected to a B&O device with powerlink cables. I'm connected to an Audiolab 8200CDQ with two separate line cables, and hence the relevent swith needs to be in the line position. IMHO, the Audiolab 8200CDQ is by far the best digital/analogue pre-amp in its price range. It contains a CD player, but I tend to rip CDs into a loss-less format and play them back from an old notebook (accessing a server-based library) over an electricly isolated USB2 audio link (24bits at 96khz).. At least to my ears, playing CDs this way and using an Audiolab "optimal spectrum" digital filter sounds much better thn playing the CD directly. I also have a significant vinyl library that the Audiolab handles well through a pickup booster.
Similarly, I think that Beolab 9s are the best speakers in their price range, which is why I'm so sad that one of mine has died.
Nick
So presumably the red light to green light switching is working correctly when it is sensing a signal (and returning to red after a period of time with no signal)?
I've had a look at the Service manual and indeed it looks like pretty much everything (aside from the PSU) is part of module 999. In earlier speakers there was a relay responsible for the switching but I think the BL9s use a FET instead (there's no 'click' apparent when the BL9s switch out of standby).
Unless you are confident to try diagnosing the fault at a component level any repair will likely be a job for a service engineer.
I don't know for certain but the service manual seems to imply that the fuse is located between the power input and the PSU so it is unlikely to be at fault given the symptoms you are experiencing.
Kind regards,