Broken cathode, can it be fixed?

[Lavissa]

Hi,

I acquired a twin Le Mans 24 in poor shape last year for the express purpose of spare parts.
One of the monitors had a broken cathode. While knowledgeable about electronics, maintenance and repair, CRTs are quite new to me.
Can this be salvaged in any way, or is it destined for the electronics landfill

 

[Zepherino]

The chassis, yoke, and neck board are all probably salvageable, but the glass tube is toast. Think of the glass CRT tube as a giant light bulb, or more accurately, a giant vacuum tube. Once you break the glass, it's pretty much gone.

The chassis and neck board are 2 the big PCBs you see in the image, and the yoke is thing attached to the tube that has magnetic windings on it.

8-Bit Guy on YouTube recently did a fantastic video on how CRTs work, if you're interesting in learning more.

View: https://www.youtube.com/watch?v=3A-Td0i4_Kc

 

[Lavissa]

Aah, so the yoke is a slid-on piece to the tube.
I was looking at all the adjustment rings, clamps etc, and figured that maybe, just maybe, it was possible to replace the cathode.
That's a shame.

I'll salvage the rest of the parts, and just scrap the whole tube itself then.

 

[trashedcabs]

You can replace the tube itself if you have a compatible donor. Make sure you save the yoke and rings from the old tube, you will need that for the swap.