It could be a couple of things, but most likely the BL5's are missing the power link data. The main fix is to update the BS3 to at least SW 3.1, which I presumse is already done in your case. If this is the case, make sure the Option setting is correct: To make sure Option 0 is selected, do this by selecting Option 1 and then re-set it to Option 0.

You can measure the signal: check the voltage between pin 6 & 7. Turn on the TV with all PL cables attached, if it is below 4v disconnect all cables and measure again - if >4v now, then the fault is most likely with a cable. The most convenient way is to check power link data by using a speaker with display (Penta, BL4500 etc).

Roger

I think, Roger is right, assuming, that BL5 should be updated to SW 3.X not the BS3...(?) But this depends on how old your BL5s are.

And for changing option setting to BL5 you must change the Link Option - L.OPT.

First thing - as always - disconnect BS3 and your BL5s from the mains (after setting it to standby mode), wait a few minutes and reconnect.

You said, BL5s green light comes up in SPEAKER 2 mode. What about SPEAKER 4 mode? And are they red in SPEAKER 1 - 3 - 5 mode?

Did you - or your dealer - assign the Powerlink ports correctly? 

Next thing I`d try is to disconnect the front Powerlink out and connect it to your BL3s - Same fault?

Next you can try  - connect your BL5s to the rear Powerlink...?

Next if your BL5s are daisy chained: disconnect both Powerlink cables (are they fully wired?) connect just one BL5 with one PL cable, then the second. - same fault?

Hope this helps

Stefan

Thank you Stefan & Roger for your pointers.  I will certainly test them as suggested

Both my BL5 & r BS3 are 2 years old.  I updated the BS3 sw about 18 months ago.  Can you please advise how i can check the BL5 sw version myself?

I must have tried (so did the B&O technicians - 3 different guys on different occasions) unplugging & reconnecting the power to the BL5 & BS3 over 100 times.   i also suspect the cables the BL5s are not daisy chained so both connecting cables have to be bad to have this happen to botqh speakers.  The BL5s work when the technician connected a BS4000 directly to them (bypassing the BS3).  The lights on the BL5s are red in Speaker 1, and green in Speaker 2, 3, 4 & 5.  I will check the pin voltages as Roger mentioned.

I have tried plugging the BL5s to all the different output sockets in the BS3, with the same result.  When I do that with the BS3s they show up right away on the BS3 menu.

I appreciate you guys' expert opinion & advice & will continue with the investigation. 

Dave

I had the same issue with my BS3 /BL5. A software update of the BS3 fixed the problem...

Agree. Must be the BS3. BL5s work when connecting to your BS, so BL5 and Powerlink cables should be ok.

Did you check the SW of your BS3? Service menu is available by pressing MENU - 0 - 0 - GO.

Usually SW is displayed in white color, but if there is a nonmatching line it is displayed red.

Stefan

Thank you Stefan.  Your suggestion really helped.  My BS3's SW version is 8.12a.  I assume there's a newer SW available & the dealer tech will come next week to update the SW.  I will try this first & hope this solves the problem.  Thanks to all who gave me possible areas to look at.

Dave 

Kurkank: thanks for sharing.  May I ask what SW version do you have?  I'm hoping the SW update I'll be doing next week will solve the problem, as it did for Kawo.

Roger: you mentioned the Option setting should be at 0.  I noticed mine is set at Option 1.  What significance does this have & does this contribute to the problem I'm having?  Thanks for your input.

David

"My BS3's SW version is 8.12a.  I assume there's a newer SW available & the dealer tech will come next week to update the SW.  I will try this first & hope this solves the problem."

Strange. Your BS3 must have one of the earlier SW with grey UI - right? You said, your BS3 was updated to that SW (?) 18 months ago.

Last update of my BV7 (BS3) was a year ago, updated to SW 10.05a - Build 823 with new black UI. Works perfectly with my "old" BL5s SW 1.6(?).

So, if your dealer has updated your BS3 to SW 8.12a 18 months ago, it can`t have been the newest SW...(?!). 

"Roger: you mentioned the Option setting should be at 0.  I noticed mine is set at Option 1.  What significance does this have & does this contribute to the problem I'm having?  Thanks for your input."

BL5 option setting should be L.OPT 0 (controled by video- or audiomaster) - BS3 option should be set to V.OPT 1 (videomaster for video) or V.OPT 2 (videomaster for video and audio).

Good luck with your BS3 SW update.

Stefan