The Workbench

Re: BL3000 panel amp

stotty1111 — Mon, 29 Mar 2010 07:09:16 GMT

thanks again for that, in fact earlier today I had anothe r play - put the speakers into mute mode - no buzz , then changed the pl's round the buzz from the other speaker confirms the antenna view - I need to get longer cables anyway as I am in the process of installing the panels etc, will go for the revised cabling!

Again thanks for that!

salut

Re: BL3000 panel amp

Vienna — Sun, 28 Mar 2010 15:08:23 GMT

;-) Assuming that you are not a "B&o trained sevice technician" - the only thing you can/should do is:

- disconnect your audio and/or video equipment and the panel-amps from the mains.

- disconnect/reconnect all PL plugs !!several!! times - this cleans the pins and improves the contact - sometimes this helps!

- if not ... the largest "antenna" to pick up electrical noise (amplified in your panel amp and delivered by your speaker as "buzzing") are
your PowerLink cables - change them to the new double shielded 5.5mm version as mentioned in my previous posting.

- if not ... after 20 years, at least for BL3000panel amp - let your eqipment be serviced / cleaned / resolderd / calibrated by
a B&o trained sevice technician ...

good luck!

Re: BL3000 panel amp

stotty1111 — Sun, 28 Mar 2010 13:45:05 GMT

Hi there

thanks for that!

the units seem to buzz all the time at very low noise level even when the remote is not in use ideas?

Re: BL3000 panel amp

Vienna — Sun, 28 Mar 2010 12:27:14 GMT

PowerLink Cables - fully mounted (all pins connected):

Recently Powerlink Mk II has been discontinued and replaced by a NEW TYPE called "PowerLink Shielded"
- a fully mounted and double shielded cable with a diameter of 5,5mm and available factory mounted up to 50m

The main intention was increasing the possible lenght of PowerLink-Cables in a system and to reduce interference with external equipment.
The improved shielding between data for the display and the audio signal should also help to reduce / eliminate these "buzzes" during remote control operation.

A new Power Link Junction Box - B&O PartNr 3132055 is also available - if you want to customize the lenght without soldering an 8pin plug ;-)

Re: BL3000 panel amp

stotty1111 — Sun, 28 Mar 2010 09:53:46 GMT

Hi all

Having read another post re mk2 / 3 cables tried another mk 2 and it works checked the original lead a core had come adrift - now still got a slight noise problem in that the speaker may have interferance on it as it keeps making the sound as per if the remote is in use - any suggestions?

salut

Re: BL3000 panel amp

stotty1111 — Sun, 28 Mar 2010 05:44:39 GMT

Ok guys

now got the unit to boot up and work, ie stdby light on permanently even when in operation , also, the display will not work when set to indicate source although speakers are fine! ---- ideas please have remade all plugged joints etc - duff indicator panel?

also when shut down the speaker emits an intermittent buzz, about 4 buzzes every 90 secs when set to audio or video, but as maybe would be expected silent when in stdby ie using speaker mounted switches -- a duff cap??

help

Tony

BL3000 panel amp

stotty1111 — Sat, 27 Mar 2010 14:30:09 GMT

Hi all

Had some of these for some time just got round to re mains wiring em , now done.

Bootred 'em up today one works one doesn't - checked the output of the transformer and it appears to be working - i therefore assume the problem is the standby board - anyone any ideas - the units worked about 2 monthsa ago when first acquired.

When rewiring all i touched were the transformers ie remove from unit rewire replace!

My idea is to transfer units from the working unit one at a time to check and id the faulty board then work on that, however, other ideas gladly welcomed!

salut a un p*ssed off stotty1111

salut

tony