Beogram 4002 - 5513 - NOW WORKS, tonearm drops too early.

4 replies
G(
Offline
gammatest (archived2)
Bronze
Posted January 1, 2019 at 02:41 GMT
#2225438

Thanks to Dillen, Solderon, Saint Begrowler and Rudy from Beolover for assisting in getting me to this stage.

 

If I press start the needle drops too early it is right on the edge of the lead in - but should be a few mm over - I had to quickly press up to save the stylus.

Is there a procedure for adjusting the timings of the carriage? Does it have something to do with the position of the ruler? I also think my carriage is going over too far in the stop position. This would make sense since it is also dropping early... its like everything is a bit off.

I will upload a photo to show how far over the carriage is moving.

 

 

 

G(
Offline
gammatest (archived2)
Bronze
Posted January 1, 2019 at 18:29 GMT
#2225439

You can see in the photo that the carriage will not fully stop until it has moved the cable clip out of place.

If I screw this cable clip in the proper spot - the carriage never makes it to the stop position and the motor keeps driving (uselessly).

 

Is it possible to loosen the flat head screws at the top of the ruler and slide it to the right (from this top view), or will this cause other problems?

 

S(
Offline
sonavor (archived2)
Bronze
Posted January 1, 2019 at 19:08 GMT
#2225440

It sounds like the analog control system of your Beogram has problems. If the carriage isn't stopping then the SO switch that the plastic scale passes is not engaging (or working).  Take the scale off and see if it works when you operate it by hand. At any point when you press the SO switch the turntable should shut off. As soon as you release the switch the Beogram will be back on. While you are doing that you can check out the ES switch. Pressing it at any time will cause the Beogram to drive the tonearm assembly back home (until the SO switch engages to stop it). 

There are a number of checks to make. I show some of them on a couple of Beogram 4004 turntables I recently finished....link and

G(
Offline
gammatest (archived2)
Bronze
Posted January 2, 2019 at 21:21 GMT
#2225441

Success.

I followed section 3-2 in the service manual "Adjustment of electronic position marker"

Everything is operational. Thanks to all.

I tried to attach a video, but the site wouldn't let me upload it.

 

 

or
BeoWorld Gold Membership card
Join BeoWorld

Register to access the forums, reference material, and exclusive member benefits — 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.

View Prize Go For Gold