Vintage DD turntables. Are we living dangerously?

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

I still don't understand what you are observing.  Let me guess: the turntable comes up to speed and works normally for "2-3-5-7 hours" and then...  Here is where I lose you; does the motor stop driving the platter and then does the platter coast to a halt, or what?  In failure mode, do all the lights go out, or not? In your second one-sentence paragraph, are you now saying that the problem was solved by re-soldering some joints?  

I will say this: If you acquire a vintage DD turntable that has not been serviced in a decade or more, the FIRST thing to do is to replace all the electrolytic capacitors.  I say this, because leaky capacitors can cause damage to other vital active components that are not so easy to replace, and this can happen the moment you apply AC power.  The term "leaky" refers not only to the fact that old electrolytics can leak fluids but also to the fact that old electrolytics can "leak" DC voltage.  A functioning capacitor often is used to block DC from entering parts of a circuit where DC can otherwise damage associated components.

Replacing the electrolytics as a last resort is, as we say in English idiom, locking the barn door after the horse has escaped.

Hi Lewn,

the problem is that the cold engine has no power ...... the disch turns for a 50-60 seconds then slows down until it stops.
To start it again, you need to help with my hand, keep the 33 laps for a 50-60 seconds and then stop coming back.
The capacitors are ok, the power supplies are ok, the power transistors inside the turntable work ..... all the electronics have been repaired.

I just want to know what electronic component is that marked on the service manual called "3 hole elements" and that it is inside the engine .... i do not want to open the engine unless it is needed.