BEOGRAM 4002 RUN TO FAST

11 replies
S(
Offline
superdario (archived)
Bronze
Posted March 19, 2011 at 16:43 GMT
#1680838

Hi all,

I've bought a second Beogram 4002 Type 5521 in almost MINT condition. Unfortunally the motor run to fast (over 10 seconds per minute). How can i calibrate the speed? All other functions are working good...

Thanks!

JO
Offline
joeyboygolf
BronzeFounder
Posted March 19, 2011 at 18:36 GMT
#1680839

Upgrade to silver or gold membership and download the service manual. Page 4-1 describes speed adjustment.

You will need a stroboscopic disc, available to buy or download on the internet.

mexking
Offline
mexking
Bronze
Posted March 19, 2011 at 20:05 GMT
#1680840

Strobo discs

Location: Mexico city

Retired
Printing machine technician
Restored various 1960-70 items
Rock and Roll music
Collecting Vinyl
Restored Jukebox Wurlitzer 1050
S(
Offline
superdario (archived)
Bronze
Posted March 20, 2011 at 13:35 GMT
#1680841

Thanks for the quick and helpful answers.

I've already the schematic...

My questions: Is this job easy to do for a non technican? Which strobo disc i have to use in Europe the 50 Hz? Will the strobo disc work with a Maglite Flashlight?

Best Regards

JO
Offline
joeyboygolf
BronzeFounder
Posted March 20, 2011 at 14:31 GMT
#1680842

I just use  a desk light plugged into the 50Hz mains. Works OK for me.

Turn the appropriate potentiometer until the speed is correct. Easy!

S(
Offline
Step1 (archived)
Bronze
Posted March 20, 2011 at 18:22 GMT
#1680843

It is important that the lamp flickers at 50 (100hz) this means a standard tungsten filament lamp should be used. A traditional ballast flo tube would be ok but not modern electronically controlled stuff.

mexking
Offline
mexking
Bronze
Posted March 21, 2011 at 00:31 GMT
#1680844

joeyboygolf wrote:

I just use  a desk light plugged into the 50Hz mains. Works OK for me.

Turn the appropriate potentiometer until the speed is correct. Easy!

Jow, I use a normal lamp 60 Hz

 

Location: Mexico city

Retired
Printing machine technician
Restored various 1960-70 items
Rock and Roll music
Collecting Vinyl
Restored Jukebox Wurlitzer 1050
S(
Offline
superdario (archived)
Bronze
Posted March 23, 2011 at 16:19 GMT
#1680845
Thanks! I'll try it at the Weekend...

Best Regards
mexking
Offline
mexking
Bronze
Posted March 23, 2011 at 17:34 GMT
#1680846

Remember you are 50 Hz

Location: Mexico city

Retired
Printing machine technician
Restored various 1960-70 items
Rock and Roll music
Collecting Vinyl
Restored Jukebox Wurlitzer 1050
S(
Offline
superdario (archived)
Bronze
Posted April 2, 2011 at 19:03 GMT
#1680847
Update: It works and it was easy to adjust also for a non technican.

One question about the speed of the stroboscop-disc. There is a 33.33 (33 1/3) and a 45.11 (45). Why is it 45.11 and not exactly 45?

Thanks for the advice.
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