[Sticky] Tektronix Repair Service USA

A used handheld oscilloscope and multimeter from Tektronix, model THS720P, was found (20-25 years). The BNC connections' locks are destroyed, despite the fact that initially it appears to be operating without issue. I managed to take apart the device after locating a service manual, but I'm unable to remove the BNCs. Exactly how to remove the connector is anyone able to recall?
Aside from that, if you can, will you kindly assist me in locating a replacement?

All of the BNCs I discovered look to be different sorts, so I may be looking incorrectly.

Thank you

Hello,
We use a Tektronix Phaser 780 colour printer over terminal services, and I have a small issue with the settings for both colour and black and white printers.
My boss usually complains when people print in colour, so I have the main printer configuration on the server set to print in black and white and in all terminal service sessions!
But the printer configuration is always set to colour when users launch a new terminal service session!
Can somebody tell me how to make this start in black and white?

Thanks