Beosound 9000 Mk1 Dead

24 replies
F(
Offline
FireGuruMN (archived2)
Bronze
Posted July 5, 2017 at 17:26 GMT
#2206492

I have recently become the owner of a Beosound 9000 Mk1 (Model 2523).  It has very good physical appearance but is completely dead on the electronics.  I have opened it up and found this:

The standby light is not lighting.

The transformer is putting out about 10 VAC

The 3 fuses are all good.

There is about 4.8 VAC on BOTH sides of the fuse "sockets".  That seemed strange to me.

I followed the trouble shooting guide for a Mk3 and removed several of the ribbon cables.  I did not get any standby light.  Was I to remove each one individually and then reinstall it or pull the all off?  I did each one individually. 

I suspect that there is no DC voltage being created anywhere on the power supply but I do not know where to take test measurements.  There appear to be enough differences between the MK1 and MK3 that I could get in deep trouble without the right manuals.

So my options are:

1) Hang it on the wall and let it look pretty.  Tell stories of how it would operate if it was not dead.  That would make me sad.

2) Hope for a miracle answer and simple repair from this forum.  That would be great.

3) Send it to B&O and spend the kids college fund getting it repaired.  That would make me poor.

4) Some option I have not considered?

Thanks!

 

SB
Offline
Saint Beogrowler
Bronze
Posted July 6, 2017 at 01:52 GMT
#2206493
5) sell on eBay as, "untested. I don't have the proper cords" and then buy another one.
ME
Offline
mediabobny
BronzeFounder
Posted July 6, 2017 at 03:26 GMT
#2206494

Hopefully that's a joke.  Sell it on eBay as a 'Parts or Repair' unit.  Then buy a working Mk III unit.

SB
Offline
Saint Beogrowler
Bronze
Posted July 6, 2017 at 03:34 GMT
#2206495
Yes joke. It's painful all the listings where people say they cannot test B&O gear but have a dozen or more B&O items listed.
Beobuddy
Offline
Beobuddy
BronzeFounder
Posted July 22, 2017 at 09:36 GMT
#2206496

Take out the ribbon cable between the powersupplyboard and motorcontrol. 

It's a cable about 15cm long and a thicker one than the rest. 

Does the standby led work again?

If not, then your powersuppy will be defective. 

You can send it over for repair. 

Location: Utrecht

Quite a challenge to achieve "Less is More" while having the Beovirus.
ME
Offline
mediabobny
BronzeFounder
Posted July 23, 2017 at 05:56 GMT
#2206497

Beobuddy wrote:
You can send it over for repair

Don't even think of sending it overseas for repair.  Feel free to send me a PM for a local service center.

Beobuddy
Offline
Beobuddy
BronzeFounder
Posted July 23, 2017 at 12:50 GMT
#2206498

Just the powersupply I meant. No big deal. 

And in case with use of a original shipping box, that happens also on regular base. 

These items were send worldwide in a an original box. 

Location: Utrecht

Quite a challenge to achieve "Less is More" while having the Beovirus.
Beobuddy
Offline
Beobuddy
BronzeFounder
Posted July 23, 2017 at 12:58 GMT
#2206499

These local servicecenters often don't have the knowledge, parts or readable diagrams to fix the powersupplyboards. 

I often receive boards where they made several attempts without succes. It then starts first by fixing the added damage by them before fixing the original culprit. 

Location: Utrecht

Quite a challenge to achieve "Less is More" while having the Beovirus.
M(
Offline
Maurice (archived2)
Bronze
Posted July 24, 2017 at 21:17 GMT
#2206500

Hi Doug 

I have copies of the wiring hard diagrams for BS9000 Mk 1 dont try to do to detailed fault finding with Mk 3 Diagrams the Mk 3  PCB 3 power supply is a different beast to a Mk 1.

you mention that the 3 fuses are ok  on PCB 3 and you have approx 10VAC on P17 am i right in assuming you still have PCB 3 still in place?  if so you need to take a deep breath and photo in as much detail as poss the connections onPCB 3 if its in situ you will only see about half of them.  as it needs to come out to measure some basic voltages. 

let me knowyour location and where you are regarding the state of the item eg how far is it stripped down.

regards Maurice

M(
Offline
Maurice (archived2)
Bronze
Posted July 24, 2017 at 23:25 GMT
#2206501

ok after sucessfully deleating my next reply in short you need 5V at PCB3 plug P16 pins 1-2 which connects directly to PCB5 plug P83 pins 1&2 5V theres a fuse F1 which needs checking PCB 5 is immeadiatly next to the sledge cable pully  at position CD1 under a plastic sheild and  under the aluminium  top panel and has the mains voltage cables x 2 connected to it. you need to move the cd mech away from position 1  if necessary by removing the rear metal panel note the ground connectors and how many of them and then rotate the white plastic drive gear to release the clamp and allow it to move ENJOY ! lots of screws

regards Maurice

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