Just did my recently purchased BG4002 in almost mind condition.

There are some grease problems at the back of the BG4002. Most grease is hardened and the arm that moves the needle inside has to be cleaned and given some new grease.

There is some kind of ball-bearing which seats/captured behind a piece plastic that makes this noise.

Also at the back are 2 axes that has to be overhauled. The arms that are moved by the magnet-coils doesn't move at the right speed when the needle is lowered.

The platter sits very low. Has the three transport safety screws been released ?
That could indeed cause something to rub against something else inside when playing.

I noticed, the deck didn't switch to 45 RPM speed when no 12-inch record was found.
This typically indicates dried out tantal capacitors on the main board. Often 1C20 and 1C21
but it depends on the exact deck version and it would make sense to replace the lot (kits exists for
most deck versions).

Martin

Sorry for the bad quality of the pictures Can't make pictures and pointing at things 😕.

Martin,

You're right, the platter is low. I've just opened it up and will adjust the platter height and see if that makes a difference.

That is strange that it didn't switch speeds when no 12 inch was found. Every other time I try, it switches just fine. Weird that it didn't do it when I made the video. Regardless, I guess the capacitors should probably be replaced.

I'll report back on the platter height situation.

Thanks,

Hamish

Beobuddy wrote:

Sorry for the bad quality of the pictures Can't make pictures and pointing at things 😕.

I didn't see any pictures in your post, did you try and attach them?

Edit: now I see it, thanks.

Beobuddy wrote:

There is some kind of ball-bearing which seats/captured behind a piece plastic that makes this noise.

Beobuddy wrote:

Also at the back are 2 axes that has to be overhauled. The arms that are moved by the magnet-coils doesn't move at the right speed when the needle is lowered.

Beobuddy wrote:

Also at the back are 2 axes that has to be overhauled. The arms that are moved by the magnet-coils doesn't move at the right speed when the needle is lowered.

And the second one.

hammer_smyth wrote:

Martin,

That is strange that it didn't switch speeds when no 12 inch was found. Every other time I try, it switches just fine. Weird that it didn't do it when I made the video. Regardless, I guess the capacitors should probably be replaced.

 

It  pays really to become a silver or gold member.

Several service manuals with the above discribed problems can be found in these manuals.

Also some kind of improvements are mentioned for several BG4002 versions.