BG4002 Down! (Back up already)

106 replies
...

The Beogram 4002 I've had for three weeks has had some speed issues since I tried to kill it.  On the occasional LP, especially 180 gram recent reissues, I had clearly audible wow, for perhaps half a revolution of the disc.  On one of the three 45s I own, the entire song seemed off pitch (too low).  I had a few hours alone this morning (the Fabric Selector and Offspring were out buying me a listening chair!) so I thought I'd take the BG4002 out of the system and try a 10 minute, 10 dollar fix.

After taking the cartridge off, I took the two main aluminum plates off, removed the top platter, removed the belt, and finally removed the subplatter.  I used a twisted, lint free cloth to clean out the bearing cylinder as best I could.  I then wiped down the bottom spindle.  I put two drops of "Z Black Bearing Oil" from LP Gear in the bearing cylinder, one drop on the bottom spindle, and reassembled everything.

Since then I've listened to a 45 a few times, a couple (former) problem LPs, plus the 10" Black Market Clash, and I've heard no wow/speed issues.  I've got a strobe disc coming this week for testing, and I'm ordering belts from Martin to be sure, but it seems cleaning and lubricating the platter was the key here.

I should've known better.  When I bought the deck from Jeff, he disassembled the whole of the platter and I should've cleaned and lubricated it when I reassembled it.

Can't wait until I finally get the new Soundsmith cartridge!

Rich, you should open the deck again, and clean of all old grease and hardened oil, lubricate everything with a silicone oil/grease, it does wonder. For Strobo disc I

Location: Mexico city

Retired
Printing machine technician
Restored various 1960-70 items
Rock and Roll music
Collecting Vinyl
Restored Jukebox Wurlitzer 1050

SΓΈren Mexico wrote:

Rich, you should open the deck again, and clean of all old grease and hardened oil, lubricate everything with a silicone oil/grease, it does wonder. For Strobo disc I link

Which cartridge did you order ?

1) May do more work when I get my belts and the cartridge.

2) Have tried that disc, but no light I had around the house worked with it.

3) SMMC20EN

If that disc didn't work, you are going to struggle with any other disk unless it comes with its own strobe!

Do you use standard incandescent bulbs or some form of electronic compact flourescent / halogen downlighters (driven from electronic transformers)?

One other thing you need to make sure the actual bearings have been lubed not just the thrust disk at the bottom. These are the bronze collar(s) one at the top and maybe near the bottom too. Use a very light oil so as to hopefully be partially absorbed (I guess there is no guarrentee unless it is boiled in but you try doing that!)... If these collars dry out and are still used they will become permenantly useless.

I guess I should have said I ordered a strobe that came with a disk.

So in the past few days, my strobe came in and the speeds seem fine at the "0" mark on the top of unit adjusters.  No need to adjust anything.  But then I was playing a 180 gram version of Nirvana's Nevermind - one of the LPs that seemed to have speed issues - and the speed was fine but now there is a clicking/popping/something in the right channel's tweeter.

Changed to CD - no distortion.  Changed to tuner - no distortion.  Played the LP again, there's the distortion again.  A clicking or popping in the right tweeter only.  That was Monday.  Scratched my head.  What would cause popping in the right channel only?  Patch cable problem?  Inside the turntable problem (yet another capacitor issue)?  Cartridge issue?  I can test the cartridge issue if and when Soundsmith ever sends me my new cartridge (16 days since order and counting).

That was Monday night.  Last night, I played Nevermind again to try to troubleshoot the right tweeter only clicking and popping distortion.  And it's gone.  No speed issues, no distortion in a tweeter.  Just wonderful sound.

I scratch my head again.  What was different last night than Monday night?  And the only thing I can think of - we were doing our laundry Monday night.  Dear god, could the poor/inadequate wiring of our 1970's era house be causing all this intermittent crap?!?!

Rich wrote:
I can test the cartridge issue if and when Soundsmith ever sends me my new cartridge (16 days since order and counting).

Don't worry until it's four weeks or so. Calling/emailing/faxing/whatever them won't speed it up either. They probably just have a back log. You will get it eventually (ask Soren 😁 )

Rich wrote:
What was different last night than Monday night?  And the only thing I can think of - we were doing our laundry Monday night.  Dear god, could the poor/inadequate wiring of our 1970's era house be causing all this intermittent crap?!?!

I wouldn't wonder. One week at the office, all these problems started to accumulate:

  • an ethernet switch started to lose packets
  • the remote control range of my office audio (Beocenter 8000) dropped to one meter or so
  • some (but not all) security cam channels developed all kinds of interference
  • a big professional Laserjet gave up with fuser heater errors (and I almost ordered the 300+ euro service kit)

...and all this because the switched mode power supply of a video switcher decided to become ripe, and managed to ruin the electricity of a complete phase in the room. Caught it because it was so hot it was about to melt.

Rich wrote:
I scratch my head again.  What was different last night than Monday night?  And the only thing I can think of - we were doing our laundry Monday night.  Dear god, could the poor/inadequate wiring of our 1970's era house be causing all this intermittent crap?!?!

It seames like you have some difficault decisions to do:

1. Rewire the house

2. Get a new laundry machine

3. Leave laundry to mother in love

4. Dont play music on Mondays

5. Get a Mexican maid (the ones without green card are cheapest) and 2 new washing stones, find the nearest creek or river.

Remark to 5. Dont ever let the maid near, or even tell her you've got one, a vacuum (Hoover) I'm into my 7th or 8th in 10 years (same maid)

πŸ˜‚πŸ˜‚πŸ˜‚

But dont cry about your problem, sometimes, when the power here goes below 100 V, my stop, pause dont work on my BG 2404 (cap??) and once in a while we get some micro blackouts and my BM 2400 goes from station 1 to 5, my house is also some 35 years old, but remodelling I changed a lot of wiring, pulled ground wires to nearly all outlets and installed more outlets and a new fuse central.

Soundsmith makes good carts, and it is worth waiting for, dont send him mails, each mail will cost a delay of 1 week 😁, normal delivery time is 3 weeks +-.

Location: Mexico city

Retired
Printing machine technician
Restored various 1960-70 items
Rock and Roll music
Collecting Vinyl
Restored Jukebox Wurlitzer 1050

Let me be crystal clear about one thing.  I was not complaining about Soundsmith.

If I had been complaining about Soundsmith, I would have mentioned how they billed my debit card the same day I ordered the cartridge, whereas most companies I deal with regularly (The Elusive Disc, Amazon, NewEgg) do not bill my debit card until the product is shipped.

No, I was NOT complaining.  πŸ‘

Last night was the first evening home from a business trip so listened to some music.  Started with a CD and all was well in the world.  Went through my mail.  Hey, belts from Martin arrived!  Yay - will have to replace the BG4002 belts this weekend then.

I thought to myself, what else should I do while I have the deck open?

Went through the rest of my mail.  Still no new cartridge.  Bummer.

Then I put an LP on.  Great.  There's the slow speed problem again.  Please, please, please let's hope it's just the belt(s).

Replaced the belts last night.  Dig the difference in size between the belt on the BG4002 as purchased from Jeff, and the belt just received from Martin (the shorter of the two).

 

...
or
BeoWorld Gold Membership card
Join BeoWorld

Register to access the forums, reference material, and exclusive member benefits β€” including our monthly prize draw.

Become a Member

December 2026 Prize Draw

Gold Members Only

As a Gold member you're automatically entered into our exclusive prize draw — your chance to win iconic Bang & Olufsen products. A unique benefit of BeoWorld Gold membership, every draw brings a new opportunity to win something special.