TEK 543 Serial under 20.000 manual required

[ingalopez]

Hi there!  I have adquired a Tektronics 453 osciloscope. The one with the Nuvistors. The serial number is 14.293.

It was working to some extent, but after some disasembly needed to unstuck the variable A sweep pot, and clean the Position pots wich were jumping all arround, I cannot get a display.
Checked the low voltage power supplies, al good. Manage to measure the -1950 V (without frying my meter!), and it is there.
Also, can see the heater of the CRT glowing (fiuu...!).

I got a Service manual for the 453, S/n 20.000 +, but it wont match mine.

Can indicate where to get the right Service manual?

And some advice to were to look will be welcome.

Thanks guys

[colorburst]

BAMA has a copy: https://bama.edebris.com/manuals/tek/453

[ingalopez]

Thank you!

Will be looking into it, but it is the right one.

I must have broken something with my elbow, while playing with this oldie.

Also the fan was stuck, it needs replacing the bearings, but they are not easy to find in my country.