Hi, my beloved Beocenter 9000 suddenly died on me. It is a beautiful piece of kit, which I will probably keep for it's aesthetic value alone..but naturally, I would prefer that it worked, so I wonder, does anyone out there have any idea what might cause an abrupt and total failure like this? I came to use it one day, and found the screens were dead...no lights at all. No sound, no opening doors, absolutely no function. I have fixed many TVs, PCs and other electrical stuff, usually by looking very closely for broken solder joints, burnt out components..blown caps and so on.....with this unit, I have checked for everything I can think of....fuses, circuit boards, damaged components etc. All seem ok, and yet there's no function. When you power up, the cd and tape drives spin for a second or so, and then stop. The only interesting thing I have noticed, concerns the relays. There are three that are easily seen: the first (1) is directly behind the transformer coil...the second,(2) to the right of the coil, and the third, to the right of the cd drive. When I power up I notice that relay (1) activates and remains activated, whereas, on a working Beocenter 9000, I have access to, this relay only activates for a second or so, before switching back to it's unpowered state. I notice also, that relay(2) only activates some of the time.....beyond that, the machine remains inscrutable. If anyone has any idea what I should be looking for here, I would be delighted to hear from them. My thanks in advance. Peter

Try to resolder the power PCB, which is located behind the CD mechanism. I have had a BeoCenter 9500 in repair with the same problem, after resoldering this PCB it came back to life!

Hi, and thanks for the input I will pull that board out and go over it in the next day or two I'll let you know how it goes.

Cheers Peter

Blackrix:

Try to resolder the power PCB, which is located behind the CD mechanism. I have had a BeoCenter 9500 in repair with the same problem, after resoldering this PCB it came back to life!

sounds more like the cpu has problems,

i believe Quality Dream Audio sell them and will even do the repair for you on a no fix no fee bases.

That was also my first guess in my BeoCenter 9500. But replacing it with a good processor did not help, resoldering did the trick. I would start with resoldering and see if that works. If not, you will have to start looking further in the Beocenter.

Well, I removed and resoldered the power PCB and also the mains input/fuse PCB, but sadly, there is no change. I begin to feel that it is either a solder problem....and what a lot of soldering there is in a 9000, or maybe a dud capacitor or something...I'll keep plugging away at it!  

Hi, and thankyou for your suggestion. When you say resoldering.....you mean generally, board by board, or just the cpu? If the latter, where does it live, and am I likely to do it any harm by heating it up?

Regards Peter

I don't know if you have the equipment and the schematics, but I think you should try measuring. It might be the microprocessor.

Sadly my equipment extends to a multimeter and soldering irons, and no schematic. What you say about the cpu, rings a bell. Many many years ago, a new fangled microwave I had had for a couple of years just died. We took it to a repair man and he said it was the cpu....too expensive to replace, so he bypassed it, and the machine ran fine on basic function..obviously would not work in this case. 

..........the microprocessor may need re-soldering!!!!!!! I don't think so.

This sounds like a power supply or perhaps a relay problem but you really do need to take it to someone who can take some sensible measurements.

Where are you??

Yes, this is the way I'm thinking now...all the easy/obvious possibilities exhausted. I'm in Salisbury, and I gather there is a B&O dealer in Wimborne, not too far away, so I will probably run it down to him.  

Regards and thanks for the input

Peter

Be prepared for them to condem it with the "can no longer get spares" excuse, maybe without even seeing it.

Try a PM or email to member nobby on this forum. He is an enthusiast who does repairs.

Spoke to the closest B&O agent, and as you predicted, he told me that it would likely be uneconomical to repair, so I might try and find Nobby and have a word with him. Thanks for the suggestion.

Peter