While some say that having vintage audio is like a holy grail - in reality it means work 
. This time I'm maintaining the bearings of my table's tonearm. The arm and its moving parts are the most finicky part of the table. And they show their age. Based on the serial number, the table is from 1965 (one of the first 100 Thorens TD-124 MK II). The tone arm is original.
To start, some photos of the disassembly of the arm board.
Spoiler warning:
datasheet
Do you know what kind of bearings it uses inside ?
yes. I have had it open before. Steel balls.
You might see a lot of friction in an old bearing depending on what lubricants were used when it was made.
No lubricants. I have service instructions that tell not to use any lubricants at all.
And will you measure the bearing friction before and after.
No. I don't have friction issues. I have issues with the suspension part.
Meanwhile on the other side of the world
Not ready to leave the TO-N package behind...
The newfangled kid on the block...
https://www.analog.com/media/en/technical-documentation/data-sheets/adr1399.pdf
Better not botch this job
