New Member Beomaster 6000

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Scott Posted: Sun, Nov 29 2015 12:21 AM

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Hello all.

I've been honored with my dads B&O system after his passing recently.

Beomaster 6000   Beogram 8002   Beogram CD X   Beocord 8004 HX-PRO  and I'm not sure which model speakers but they have a red line running around the outside. All are in pristine condition cosmetically.

My problem is that the Beomaster is non functioning with exception of the right volume arrow and the numeric led shows .0  

I've read countless posts on the Beomaster 6000 and almost everyone suggests a complete recap to bring it to life.

Is this the best recourse or is there another direction I should be looking?

I'm not sure if I'm attaching a photo correctly but I'll give it a try.

Thanks for any help

Scott

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Dillen replied on Sun, Nov 29 2015 8:04 AM

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Welcome to Beoworld !

Your speakers will be from the Redline series.

The frozen display points to a not-running CPU.
There can be many reasons for this and it's impossible to point to the exact one without actually measuring around a little but
ripple on the 5V supply due to aging capacitors or a failed rectifier, cracked solder joints typically at connectors and plugs,
a digital short somewhere, a fault in the reset circuit (this is a delicate circuit with a most sensitive trimmer) or a dead CPU.
In case of the latter, the only cure would be to find a working CPU from a donor Beomaster.
A general replacement of capacitors is always recommended in this model, as are replacement and readjusting of the
idle current and DC offset trimmers in the amplifier section. They live in a warm area so will typically be bad by now.

Oh, and the arrows are not volulme indicators (that will be the long bars to the left), they are to assist you when tuning.

Martin

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Scott replied on Sun, Nov 29 2015 2:41 PM

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Thanks for the welcome Dillen

I've enjoyed reading your posts while looking through the forums for information.

Hopefully its not a bad CPU. I see very few if any Beomaster 6000 units around that would be considered donor units. I would like to leave that as my last resort I guess.

My knowledge of electronics is very basic, I've brought several Macbooks back from the dead after thorough reading, but it's only because I'm more of a remove and replace type of guy.  

What are my options when it comes to replacing the proper capacitors etc?  Is there a list of usual suspects?  I've read that you use to have recap kits available at one time. I would consider something like that as a starting point.

I appreciate the patience in answering my questions.

Thanks

Scott

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Dillen replied on Sun, Nov 29 2015 4:16 PM

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Thanks for the kind words.

A capacitor kit is available, and trimmers too, but repairing/calibrating/recap'ing does require some electronic skills, tools and some instruments.
Not knowing you particularly well, I'm not sure if this is something you have?

Another thing is, that I really would recommend diagnosing the present fault before diving in to a recap/rebuild/upgrade. Any faults or
mistakes introduced while recap'ing could be very difficult to locate later.
Diagnose - repair - rebuild/upgrade in that order.

Martin

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Scott replied on Sun, Nov 29 2015 4:47 PM

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Thanks Martin

I appreciate your knowledge and experience.

I have very basic to intermediate skills and tools. soldering iron/gun, Fluke multi meters etc  Enough to get me in trouble I guess..

I've downloaded a pdf of the service manual and will go at this as slow and methodical as my 54 yo brain can handle and try and diagnose as suggested. I definitely don't want to make things worse.  

Scott