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Cogram 4000 MK II - Speed issues

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sudhirbhosale

Active Member
Joined
Jul 14, 2013
Messages
306
Points
28
Location
Hyderabad / Mumbai
Hi all
My brother in Mumbai have Cogram 4000 MK II which he kept idle for few years. Now he started using it. But is is giving uneven speed problem.
Need help on below issues:
How to address this issue.
Can I suggest to lubrication of motor (as some motors should be be lubricated
Would Zorric spray can help here
Any more pointers welcome

Another point: Tried searching servicing manual, But There is limited info of this model on net. So any similar TT model have similar motor, platter design?
Thanks
Sudhir
 
Last edited:

reubensm

Well-Known Member
Joined
May 26, 2010
Messages
4,968
Points
113
Location
Trivandrum, India
If its a direct drive, speed issues are usually caused by contact problems in switches and potentiometers. A good clean up should sort out the issue. Not sure about the internals of the COGRAM but not a good idea to lubricate the motor unless it is an approved option by the manufacturer.
 

Haribabu

Active Member
Joined
May 31, 2017
Messages
278
Points
28
Location
Hyderabad
May be a lubrication issue (dryness) try one or two drops of recommended lubricant
 

kuruvilajacob

Well-Known Member
Joined
Jul 11, 2011
Messages
1,230
Points
113
Location
Kottayam
As I understand, the direct drive system adopted in Cogram 4000 is quite complicated according to my mechanic. I don't know the technical aspects but it is supposed to use a different system from many other DD turntables
 
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