Beomaster/Beocord 6000 and Beogram 6002 Refurbishing Project

Hello folks,

Acquired the above-mentioned stereo equipment and am trying to troubleshoot a few issues:

1) Beomaster 6000 - Volume stuck at 25... Volume controls are not responding whatsoever... Opened up the box and suspect the volume control motor may be burned out (Belt and string look good... can manually edit volume by spinning wheel).  Would like to try replacing the motor to see if that fixes the issues. (Does anyone suspect it might be something else?) Not sure what kind of motor I need???

2) Beocord 6000 - Tape deck belts were decomposed.  Can anyone advise where I might be able to order replacement belts?

3) Beogram 6002 (Connected to Beomaster 6000) - Sound only plays out left speaker... Sound out right speaker is barely audible. Have ordered a DIN to RCA cable (to use in place of the strictly DIN cable) in hopes that the issue will correct itself.  Does anyone else suspect this might work? I did confirm that the FM Radio plays out both speakers from the Beomaster 6000.

Appreciate any advice.  I'm not too familiar with this sort of equipment, but willing to give it a shot to fix this beautiful stereo!

Many thanks!

 

Nice system. Beomaster 6000 motor is hard to find. If you can find someone who rebuilds small motors they might be able to fix it. Great receiver.

Beocord, Beoparts.com, send Martin a message, he has the EXACT belts and rubber tires that make a huge difference, totally worth the money and effort. Great deck.

Beogram, just to check obvious, you have it hooked up to the phono jack? It'll help when you can test it on a known working amp/receiver etc with a known to work cable as you already have pursued. It could be cartridge, din socket corrosion or internal connections, bad cable, bad phono stage on the Beomaster, damaged pins on the tonearm, etc. great turntable.

Thank you Peter. 

I'll look into the motor repair... I believe I found a video (through this forum?) on repairing such a motor.

I will certainly reach out to Martin for the belts, and yes, I did confirm that I was hooked to the phono jack.  I'm expecting the rca cable later this month.  I'll post an update when I confirm whether they work or not.  Appreciate you mentioning the other possibilities.

I've followed one message string where it took a guy 10 months to finish his refurbishing project... Hopefully, I can beat that timeline!

Many thanks!

That dude who took 10months was me! Totally worth it. I learned a lot about a little with that project. I'm stuck on another Beomaster 6000 now. Sometimes my projects stall as I hunt for parts patiently or wait for my skill and knowledge to increase.

Improvising, guessing, taking shortcuts, and substituting parts and damaging these fantastic pieces of equipment is gut wrenching and often more expensive later on. I've learned I would rather take my time and have something perfect by the end.

Ha! Too funny. Well I'm already a month in with little progress, so maybe 10 months isn't so far-fetched.  I've purchased a soldering kit to get some practice in reinstalling the volume motor (assuming I'm able to fix it).

Also still waiting on the DIM to RCA cable to arrive.  If that fixes my Beogram right speaker issue, I'll be thrilled for a while.

Thanks again for your advice!

Also got the Beosystem 6000 with Beocord 6000 and Beogram 6006 in original white.

I also have the problem with a stuck volume some times. That is the only thing since Dillen rescued and serviced the full system back in 2008. 

It is mostly the belt slipping and Dillen does have a replacement option.

You can keep the 2 screws on the back of the Beomaster loose when it gets stuck then open the Beomaster to service position and carefully touch the belt. Then it will get unstuck for a while at least on my Beomaster 6000. Then close the Beomaster when done.

 

Thx Friedmett,

I don't get any sound from the motor whatsoever when trying to change volume.  I would think I would hear something if the motor was getting power.  I purchased a voltage meter today... I'll find out this weekend if not tonight if it's a power issue.  I have kept the Beomaster lid open to shift volume from Beogram to Radio Tuner (Radio volume is much louder than the record player for some reason), but this seems dangerous and risky... I worry that opening and closing it too much might cause other issues and I tend to worry that I might mistakenly crimp a wire. The belt looks good surprisingly... I was shocked to find the belts in my Beocord had completely disintegrated.

If the motor was operating you would hear it. I rebuilt the volume motor in my Beomaster 6000 three years ago. Here are some pictures I dug up from that project. To get it operational again was mainly opening it up, cleaning it and removing corrosion from the contacts. Since then I use that Beomaster in a listening room at least once a week and have had no problems. Before that I didn't realize the motors could be rebuilt and saved. I'm glad I didn't dispose of the motor.

Here is a photo of the Beomaster tone control board and volume motor removed.

 

Here are some pictures for reference of the volume motor assembly opened up.

I hope these help. At least you can get a preview of what to expect. It has been three years so I am a little fuzzy on the repair details. I do remember going slow and careful with the brushes. Especially when re-inserting the rotor assembly. I also remember thinking I didn't have to disassemble the motor as much as I did to make the repair. But that was my first time opening one so live and learn. :)

-sonavor

Sonavor,

Thank you. Those pictures are great. I used a voltage meter to check the connections when controlling volume and found that there was power getting to the motor.  I removed the motor but did not take it apart or disconnect it from the wiring. I gently rotated the outer cog forwards and backwards, blew everything clean of dust with my canned air and reinstalled the motor.  The volume works!  While incredibly excited, I am somewhat disappointed that it was not any major technical know-how that resolved the issue!  Alas I cannot say I rebuilt the volume control motor, but I do now have a functioning Beomaster 6000!

FURTHER UPDATE

My Beomaster 6002 however continues to have the issue of only one speaker playing sound, although the other speaker does put out very low audio if I disconnect the working speaker and increase to full volume (Note the Beomaster 6000 Tuner does play out both speakers perfectly).  I ordered a DIM to RCA cable and received it today, connecting it to the Beogram 6002.  I was able to get sound out the same speaker and simply a loud noise out the other speaker, which is more than the DIM-only cable, but still not a functioning stereo sound.  Further research suggests that my stylus may be to blame.  I have an MMC3 cartridge/stylus original to the system.  I found a post suggesting I rotate the cartridge and simply touch the stylus to see if sound comes out the other speaker.  I did get some noise out the non-working speaker and nothing from my working speaker.  These cartridges are so expensive, even the rebuilt one.  I'm reluctant to buy one until I've exhausted all other possible problems.  Is there anything else I should attempt?  

Many thanks!

I would check all of the external source inputs - phono and tape. The FM tuner is switched internally so other than the antenna of course, there are no tuner inputs. Trace the left and right signals up through the preamp board, monitoring with an oscilloscope if you have one. This will tell you if there is a problem with the Beomaster switching (in/out the source channels) or with just one of the channels on one source (like the phono). I always suspect wiring and connectors first before migrating to electrical components.

sonavor