Vintage DD turntables. Are we living dangerously?

Dear best-groove,
What do you mean when you say the "engine started to lose laps inexorably"?  It would help if you can make the problem more understandable.  However, I also think that it would be impossible for any of us to say categorically what is your problem, because the TT101 is such a complex beast.  You need the services of a good technician who can assess the unit on his own bench top.

There are known issues to be aware of:  
leaky, old capacitors (replace all electrolytic capacitors with new),
bad control chip (possible but appears to be rare in actual experience),
bad solder joints, especially around the eyelets (very high on the list),
fractures in the PCB (mine and at least one other, but maybe not so common).

I didn't mention potential problems with ANY old turntable, such as issues with the bearing and spindle shaft.

Also, best-groove, it is probable that your turntable needs calibration. As I understand it, calibration involves equalizing the impulses derived in each of the 3 phases of the motor cycle.  JP can elaborate if he is around.

Hi Lewn,

The defect is that the engine rotates well and adjusts for a long time (2-3-5-7 hours) then inexplicably the motor loses its rotation and slowly rotates.
I preferred to leave the electorolytic capacitors to be replaced last after having managed to solve all the problems.

The problems were resolved brilliantly (there were just a lot of welds to be tapped)

I had read in this 3ad that one or a couple of members had the same problem but did not have the time to search and understand in 30 pages as members has or had my own problem and know if they solved.

Hi guys

Has anyone ever opened the TT-101 engine?

I read on the service manual that inside the engine there are components called "3 hole elements" but you do not see any electronic components at the holes of the engine, and the service manual in several steps is very rough and is not as good as that of the Technics SP 10II

Does any of you know what it is, what electronic components are in the engine or do you have any pictures to let me see?

I think the problem of the low engine power is caused by some element "inside" the engine but if I open the whole engine then it is not possible to proceed with the moving motor in order to find the defective component.

Cheers