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What Are You Working On Now

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fkatze
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fkatze replied on Thu, Jan 9 2020 9:45 AM

Latest acquisition is a Beocord 8000.  Cosmetically very nice condition, was told it was bought in 79 (though I think only made from 81?) anyhow, nice example.  Came with a mint owners manual, and it looks like the motor was replaced as it's dated 89.  Capacitors and trim pots all look original, so I have some work to do.  Some mounting tabs in the plastic under the control panel are broken, so needs a bit of a repair.  I'm printing the first prototype now, so that might be something else for the commercial printers to look at when I finally get there.

 

 

tournedos
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Sorry for the non-B&O content, but this old Bernina is just too awesome Big Smile

--mika

beocool
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beocool replied on Thu, Mar 5 2020 4:17 PM

tournedos:

 

 

Sorry for the non-B&O content, but this old Bernina is just too awesome Big Smile

Lovely bit of engineering, Mika 

 

Vähintään yhdeksänkymmentä prosenttia suomalainen! 

Søren Mexico
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tournedos:
Sorry for the non-B&O content, but this old Bernina is just too awesome

Serviced my wife's Singer embroidery machine a couple of weeks ago (cleaning and some drops of oil) 10-12 years old amazing engineering

Collecting Vintage B&O is not a hobby, its a lifestyle.

tournedos
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Søren Mexico:

Serviced my wife's Singer embroidery machine a couple of weeks ago (cleaning and some drops of oil) 10-12 years old amazing engineering

This Bernina 707 is from 1967 and the GF's now late mother had bought it new, that's why I'm trying to keep it in the family so to speak - and I actually need a sewing machine every now and then. It's a lovely piece of Swiss engineering. Aside some knobs, the machine has about 2 plastic parts in total (the gears) and both are split, causing it to jam. I've replaced the first one but still need to figure out how to get to the vertical shaft without disassembling everything.

--mika

Kasse
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Kasse replied on Thu, Mar 5 2020 6:12 PM

Yesterday I was fixing my newly bought Beolink 7000. New capacitors for the two-way communication and a new battery. Today I´ve dismantled my uncles Beocord 2000 which has been standing still for a few years. The belt has turned into goo, so I´ve ordered a new set and brought out the IPA.

BeoPlay A9 Mk. II "Special Edition" - "Smoked Oak" 

Beosound Stage "Contrast Collection" - Anthracite

Beoplay M5 - Black

Beomaster 7000 + Beocord 7000 + Beogram 7000 MMC1/2 + Beogram CD7000 + Beolink 7000 + Beolab 8000

Beocenter 9500 + Beolink 1000

AUX Expander "Custom Mod" (built-in Bluetooth streaming)

Orava
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Orava replied on Fri, Mar 13 2020 12:35 PM

The red ROEs are not only ones break. My tester claims this is perfectly fine resistor.

Filed under Beocenter 9500 RIAA

 blah-blah and photographs as needed

Dillen
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Dillen replied on Fri, Mar 13 2020 8:52 PM

All black Roederstein capacitors are to be replaced on sight.
They are worse than the older red, grey and orange ones.
The black ones short! 

Martin

Johan
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Johan replied on Sat, Mar 14 2020 4:05 PM

Decided to fix two old Beo4s. I took both apart for a good clean, sanded all of the coating of the bodies off and sprayed them with MoTip heat resistant black. This paint has a bit of texture and needs to be baked at 160 degrees for hardening (it smells a bit so I put it in the oven AFTER the lasagna). I combined the best parts to a now brand new looking and feeling Beo4. I hope the paint will be a bit durable.

The other Beo4 got all the problems: worn letters on the keypad, a display with missing pixels, a damaged display bezel and a battery cover missing some hooks :-) It still works fine though.

Orava
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Orava replied on Tue, Mar 17 2020 12:46 PM

Dillen:

All black Roederstein capacitors are to be replaced on sight.
They are worse than the older red, grey and orange ones.
The black ones short! 

Martin

Wonder why they put it there, at quick look only ROE in unit. This was steady 0,5ohm.

 blah-blah and photographs as needed

Dillen
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Dillen replied on Tue, Mar 17 2020 1:17 PM

Roederstein was in fact very good quality components when new.
Unfortunately, they don't age well. The black ones in particular. 

Martin

chartz
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chartz replied on Tue, Mar 17 2020 7:12 PM
Please erase Martin.

Jacques

Evan
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Evan replied on Sun, Mar 22 2020 10:03 PM

fkatze:

The fun continues.  New holder for the slide control board.  Printing as I type this.  I made a happy discovery about the left hand slide cover - it is basically the same as the right hand one, but just a little bit shorter, and the mounting holes in a slightly different position (and only 2 instead of 3). 

<edit>

Just fitted it up - first thing I don't have to do a second time!  Pretty happy with it, but I might have used PETG and a higher infill ratio.  Not to matter.  I will change over to PETG and I'll redo everything then.

Really enjoying the CAD snippets and seeing more 3DP here! PETG is a great material, maybe the best when in need of easy printing and decent mechanical strength.

Beo4 'til I die!

Velvet
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Velvet replied on Wed, Mar 25 2020 4:33 PM

I have a lot of free time these days because of the lockdown. I fixed my beogram 4000, and today it was the turn of the beomaster 1200 which had been waiting for a revision for too long. It is an intact, complete and original sample. Even the power plug is the original equipment one. It worked, but with many defects (hum, noisy switches, noisy potentiometers, an intermittent channel).

Once opened I was able to notice the dirt accumulated in 50 years and the components still all original. I proceeded to recap the amplification board and the preamplifier board, which was also carefully cleaned. The potentiometers were also cleaned and treated with flux.

<a href="https://ibb.co/spTdbNR"><img src="https://i.ibb.co/kVLs5wB/DSC-4246.jpg" alt="DSC-4246" border="0"></a>

<a href="https://ibb.co/hC4WbBm"><img src="https://i.ibb.co/R7s0f3D/DSC-4251.jpg" alt="DSC-4251" border="0"></a>

<a href="https://ibb.co/zm6sMsG"><img src="https://i.ibb.co/nwPrGrz/DSC-4272.jpg" alt="DSC-4272" border="0"></a>

<a href="https://ibb.co/tD1HJVh"><img src="https://i.ibb.co/kXPGSNy/DSC-4274.jpg" alt="DSC-4274" border="0"></a>

<a href="https://ibb.co/SQZVxSJ"><img src="https://i.ibb.co/CJSVtLW/DSC-4275.jpg" alt="DSC-4275" border="0"></a>

<a href="https://ibb.co/mDMDLfS"><img src="https://i.ibb.co/8KSKW1X/DSC-4277.jpg" alt="DSC-4277" border="0"></a>

Main capacitors are now 2x2200uF (original 1x3000uF) and output capacitors are 4700uF/25V (original 3000/25V). That's what I had, but I think they will do their job. Many original capacitors were way out of spec, but no one was shorted. Fitted new low ESR electrolytics.

 

Checked transistor idle voltage and regulated supply voltage as per manual. Everything fine. Cleaned everything and reassembled.

In my opinion one of the most iconic and beautiful B&O products ever made, now in all its glory. 

Velvet
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Velvet replied on Wed, Mar 25 2020 4:47 PM

 

I have a lot of free time these days because of the lockdown. I fixed my beogram 4000, and today it was the turn of the beomaster 1200 which had been waiting for a revision for too long. It is an intact, complete and original sample. Even the power plug is the original equipment one. It worked, but with many defects (hum, noisy switches, noisy potentiometers, an intermittent channel).

Once opened I was able to notice the dirt accumulated in 50 years and the components still all original. I proceeded to recap the amplification board and the preamplifier board, which was also carefully cleaned. The potentiometers were also cleaned and treated with flux.

Main capacitors are now 2x2200uF (original 1x3000uF) and output capacitors are 4700uF/25V (original 3000/25V). That's what I had, but I think they will do their job. Many original capacitors were way out of spec, but no one was shorted. Fitted new low ESR electrolytics.

 

 

 

 

 

Checked transistor idle voltage and regulated supply voltage as per manual. Everything fine. Cleaned everything and reassembled. 

In my opinion one of the most iconic and beautiful B&O products ever made, now in all its glory. 

 

Craig
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Something a little different for me...……..


beocool
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beocool replied on Thu, Mar 26 2020 12:36 PM

Craig:

Something a little different for me...……..

That would make a great B&O repair shed Smile

 

Vähintään yhdeksänkymmentä prosenttia suomalainen! 

fkatze
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fkatze replied on Thu, Mar 26 2020 2:19 PM

Something different for me too.   Still overseas due to virus etc.  Working on a couple of old Walkman style players on kitchen bench.  This last one was a fair challenge, bought inop, now working happily.  I even got it to record. Couple more in the pipeline, and also a Technics SU-Z36, which looks in good nick.   I managed to get a bunch of supplies for my B&O projects for when I finally get back home.

 

Orava
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Orava replied on Fri, Apr 3 2020 10:01 AM

Wonder how many of these I have allready done. Sonewhere between 10, 20?
Usual problems and silent RIAA, broken supply tr. More or less siezed tapedeck, lack of use. And it was all pieces as previous owner has started to "fix" machine. Not complety mint, but everything works.

 blah-blah and photographs as needed

Guy
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Guy replied on Sat, May 23 2020 12:57 PM

I got hold of an RDS module for my 2-way BC2300 and have just fitted it.  It came mounted to the tuner board so I now have one of those spare if anyone wants it (should fit BC2300 or BC2500)

Photos of fitting:

 

matador43
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matador43 replied on Sat, May 23 2020 1:12 PM

oouuuuuhhh ! May like to have it ! My haunted BC2300 has no RDS!

Guy
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Guy replied on Sat, May 23 2020 1:34 PM

matador43:

oouuuuuhhh ! May like to have it ! My haunted BC2300 has no RDS!

For clarification: It's only the tuner board (without RDS) that I have spare!

 

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